If you’ve ever paused while writing a report and wondered whether to type “analysis” or “analyses,” you’re dealing with one of English’s trickiest irregular plurals. It’s a mistake even experienced writers make, especially in academic papers, business reports, and research documents where the word shows up constantly.
The good news: the rule is simple once it clicks. In this guide, you’ll learn the exact difference between analysis and analyses, why the plural form breaks the usual rules, how to pronounce each one correctly, and how to avoid the most common mistakes writers make with this word.
Core Definitions
Before diving into grammar rules, it helps to lock in the basic meaning of each word. These two terms are closely related, but they are never interchangeable.
What “Analysis” Means (Singular)
Analysis is a singular noun that refers to one detailed examination of something — a study, a report, a set of data, or a situation. It describes the process of breaking something down into parts to understand it more clearly.
Examples:
- “The analysis revealed a clear pattern in customer behavior.”
- “Her analysis of the market was thorough and well-supported.”
What “Analyses” Means (Plural)
Analyses is the plural form of analysis. It refers to two or more examinations, studies, or evaluations.
Examples:
- “The report includes several analyses from independent researchers.”
- “Multiple analyses confirmed the same conclusion.”
Notice that “analyses” is pronounced differently from “analysis” — more on that below.
Grammar Breakdown
Singular vs Plural: The Rule Behind the Change
Most English nouns become plural by simply adding “-s” or “-es.” Cat becomes cats. Box becomes boxes. But “analysis” doesn’t follow that pattern, because it isn’t a native English word — it’s a direct borrowing from Greek.
Words borrowed from Greek that end in “-is” typically form their plural by changing “-is” to “-es.” This same pattern shows up in several other common words:
| Singular | Plural |
| Analysis | Analyses |
| Crisis | Crises |
| Basis | Bases |
| Thesis | Theses |
| Hypothesis | Hypotheses |
| Diagnosis | Diagnoses |
Once you recognize this pattern, “analyses” stops looking like an exception and starts looking like part of a predictable family of words.
Plural of Analysis in Spanish
English isn’t the only language where this word came from Greek — Spanish borrowed it too, as análisis. Interestingly, Spanish handles the plural differently than English does.
In Spanish, “análisis” is an invariable noun, meaning the singular and plural forms are spelled exactly the same. The only difference is the article used before it:
- el análisis (the analysis — singular)
- los análisis (the analyses — plural)
So while English changes the word itself (“analysis” → “analyses”), Spanish keeps the spelling identical and simply changes the article to signal number.
READ THIS: Uhm Meaning in Text: What Does “Uhm” Mean in Chat & Texting?
Why “Analysises” Is Never Correct
A common mistake — especially among ESL learners — is adding a regular English plural ending directly onto “analysis,” producing “analysises.” This form does not exist in standard English and is considered a clear grammar error.
Why it happens: English speakers are trained to default to “-s” or “-es” for plurals, so the instinct to add an ending to “analysis” is understandable. But because this word follows Greek pluralization rules instead of standard English ones, that instinct leads to the wrong result.
Quick fix: Whenever you’re about to write “analysises,” stop and swap the final “-is” for “-es” instead: analyses.
Greek Origin of the Word “Analysis”
The word “analysis” comes directly from the Ancient Greek word analysis, meaning “a breaking up” or “a loosening.” Its plural form in Greek followed the same “-is” to “-es” shift that survives in modern English today.
This Greek origin explains why the word behaves so differently from typical English nouns. When English absorbed large amounts of vocabulary from Greek and Latin during the growth of scientific and academic writing, many of these words kept their original plural patterns instead of adapting to English norms. “Analysis” is one of the clearest surviving examples of that linguistic inheritance.
Special Plural Patterns in English
“Analysis” belongs to a broader category of irregular plurals in English, which generally fall into a few recognizable groups:
- Greek-origin “-is” to “-es” words: analysis/analyses, crisis/crises, thesis/theses
- Latin-origin “-us” to “-i” words: cactus/cacti, focus/foci
- Latin-origin “-um” to “-a” words: datum/data, curriculum/curricula
- Completely irregular native English words: child/children, mouse/mice
Recognizing which category a word falls into makes it much easier to predict its correct plural form, instead of memorizing every word individually.
American vs British English Usage
Here’s some reassuring news: unlike many words that split between American and British spelling (color/colour, organize/organise), analysis and analyses are spelled identically on both sides of the Atlantic.
| Region | Singular | Plural |
| American English | Analysis | Analyses |
| British English | Analysis | Analyses |
The only related spelling difference in this word family shows up in the verb form: Americans typically write “analyze,” while British English uses “analyse.” The nouns “analysis” and “analyses,” however, stay exactly the same worldwide.
Plural of Analysis UK
To directly answer a common search: in British English, the plural of “analysis” is still analyses — there is no separate UK-specific plural. British academic writing, journalism, and business documents all follow the same singular/plural pattern as American English. The consistency here makes this word easier to use correctly than many other British-versus-American spelling pairs.
Common Errors and How to Fix Them
Error 1: Using “analyses” as a singular
Some writers mistakenly treat “analyses” as if it were singular, producing sentences like “This analyses shows a strong trend.” Since “analyses” is always plural, this usage is incorrect.
Fix: “This analysis shows a strong trend.”
Error 2: Using “analysis” to refer to multiple cases
The opposite mistake also happens — using the singular form when referring to more than one study. For example: “We reviewed three separate analysis of the data.”
Fix: “We reviewed three separate analyses of the data.”
Error 3: Pronouncing them the same
Because the words look so similar in writing, many speakers pronounce them identically out loud, which can confuse listeners in presentations or lectures.
- Analysis is pronounced: uh-NAL-uh-sis
- Analyses is pronounced: uh-NAL-uh-seez
The key difference is in the final syllable — “sis” versus “seez.” Getting this right matters just as much in spoken English as it does in writing.
Practical Usage in Writing
Using “Analysis” in Academic Work
In academic writing, “analysis” is used constantly to describe a single method, chapter, or study section:
- “The analysis section of this paper focuses on survey results.”
- “A qualitative analysis was conducted to interpret the interview data.”
Using “Analyses” in Research
Research writing frequently references multiple studies, tests, or data sets, which is where “analyses” becomes essential:
- “Statistical analyses were performed using three different models.”
- “Earlier analyses of similar data sets support this conclusion.”
Why Proper Pluralization Matters in Research
Getting this distinction right isn’t just a grammar technicality — it affects clarity and credibility in professional and academic writing. Using “analysis” when you mean multiple studies can make a paper’s methodology confusing, while misusing “analyses” as singular can make writing look careless to reviewers, professors, or editors.
In fields like data science, business reporting, and academic research, precision with terminology signals precision in the actual research itself. A single misplaced plural can distract a reader from otherwise strong work.
Plural of Analysis Pronunciation
Because pronunciation is one of the biggest points of confusion with this word pair, here’s a simple side-by-side breakdown:
| Word | Pronunciation | Syllables | Stress |
| Analysis | uh-NAL-uh-sis | 4 | 2nd syllable |
| Analyses | uh-NAL-uh-seez | 4 | 2nd syllable |
Both words share the same stress pattern and syllable count — the only real difference is that final “-sis” versus “-seez” sound.
READ THIS: WYLL Meaning in Text: What Does WYLL Mean in 2026?
Tips for ESL Learners
Simple Memory Tricks
- Remember: one analysis, two or more analyses — just like “one crisis, two crises.”
- If the sentence has a number greater than one, or words like “several,” “multiple,” or “many,” the plural form “analyses” is almost always needed.
- If the sentence uses “a,” “an,” “the,” or “this” before the word, “analysis” (singular) is usually correct.
Visual Cue
Picture the word ending like a light switch: “-is” is OFF (one item), “-es” is ON (more than one). This tiny visual trick helps many learners remember the shift instantly.
Pronunciation Trick
Think of the plural ending like the word “geese” — plural, and ending in that same “-eez” sound. Analysis → Analyses, just like goose → geese ends in a similar sound shift.
Quick Practice
Try filling in the blanks with “analysis” or “analyses”:
- The ________ shows strong correlation between the two variables.
- Multiple ________ confirmed the same overall trend.
- Their ________ disagrees with earlier published research.
(Answers: 1. analysis, 2. analyses, 3. analysis)
Analysis or Analyses in Academic and Professional Writing
In academic and professional writing, “analysis” and “analyses” are used depending on whether you are referring to one examination or multiple examinations. Use analysis when discussing a single study, report, or evaluation, such as “The analysis reveals important findings.”
Use analyses when referring to two or more studies, reports, or evaluations, as in “The researchers conducted several analyses of the data.” Choosing the correct form helps maintain grammatical accuracy, clarity, and professionalism in research papers, business reports, essays, and presentations. Remember that analysis is singular, while analyses is its plural form.
FAQs
What is the plural form of analysis in British English?
The plural form is “analyses,” exactly the same as in American English — there is no separate British spelling for this word.
How many syllables are in analysis?
“Analysis” has four syllables: a-NAL-y-sis.
Which is correct: analysis or Analyses?
Both are correct, depending on number. “Analysis” is singular, and “analyses” is plural.
Can analyses be used as a singular noun?
No, “analyses” is always plural and should never be used to describe a single study or examination.
Can I use “analysis” to refer to multiple studies?
No, “analysis” is singular only. Use “analyses” when referring to more than one study or examination.
Conclusion
The difference between analysis and analyses ultimately comes down to number, not region or style. “Analysis” describes one detailed examination, while “analyses” describes two or more — a pattern borrowed directly from Greek that also shows up in words like “crisis/crises” and “thesis/theses.”
Once you recognize this Greek-origin pattern, you’ll never second-guess the spelling again. Just remember: one analysis, several analyses — and you’ll always get it right, whether you’re writing a research paper, a business report, or a quick email.
Leave a Reply