Analysis vs Analyses is one of those grammar pairs that looks like a typo until you realize it isn’t. Both words come from the same root and carry the same core meaning, yet swapping one for the other can quietly undercut your credibility in an essay, report, or email.
The confusion isn’t really about spelling it’s about number. Analysis describes a single, focused examination, while analyses describes two or more. Add in a Greek-based plural pattern that skips the usual English rules, and it’s easy to see why so many writers pause mid-sentence. This guide clears up exactly when to use each one, for good.
Analysis vs Analyses: What’s the Difference?
In one sentence: analysis is singular, analyses is plural. Both words describe the act of breaking something down to study it closely, but the number of examinations you’re talking about decides which form belongs in your sentence.
- One report, one study, one breakdown → analysis
- Two or more reports, studies, or breakdowns → analyses
That’s the entire rule. What makes it tricky is how the word changes shape, since it doesn’t follow the usual “just add an s” pattern most English nouns use.
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Core Definitions
What Does “Analysis” Mean? (Singular)
Analysis refers to a single, detailed examination of something a set of data, a problem, a document, or a situation broken into parts to understand it better.
Examples:
- “The analysis revealed a sharp drop in customer retention.”
- “Her analysis of the contract flagged two risky clauses.”
You’ll typically see this singular form in a methods section, a business report, a diagnosis, or any writing centered on one specific examination.
What Does “Analyses” Mean? (Plural)
Analyses is simply more than one analysis multiple examinations, studies, or evaluations considered together.
Examples:
- “The researchers ran three independent analyses before publishing.”
- “Competing analyses of the same dataset reached different conclusions.”
This plural form shows up most often in meta-research, comparative studies, and any writing that references several separate examinations at once.
Analysis vs Analyses Comparison Table
| Feature | Analysis | Analyses |
| Grammatical number | Singular | Plural |
| Meaning | One detailed examination | Multiple detailed examinations |
| Pronunciation | uh-NAL-uh-sis | uh-NAL-uh-seez |
| Example sentence | “The analysis is complete.” | “The analyses are complete.” |
| Common fields | Business reports, single case studies | Meta-studies, comparative research |
| Verb agreement | Takes a singular verb (“is,” “was”) | Takes a plural verb (“are,” “were”) |
Grammar Rules
Singular vs Plural: The Rule Behind the Change
Most English nouns become plural by adding “-s” or “-es.” Analysis doesn’t follow that pattern because it isn’t originally an English word it’s Greek, and it kept a piece of Greek grammar when it entered English. Nouns ending in “-is” typically become plural by swapping that ending for “-es”:
| Singular | Plural |
| analysis | analyses |
| crisis | crises |
| thesis | theses |
| hypothesis | hypotheses |
| diagnosis | diagnoses |
Once you recognize this pattern, you can apply it to any word in the family without memorizing each one separately.
Why “Analysises” Is Never Correct
Because the standard English instinct is to add “-s” or “-es,” many learners write:
- ❌ analysises
- ✔ analyses
This form doesn’t exist in English. If a word ends in “-is” and comes from Greek or Latin, check whether it follows the “-is → -es” swap before defaulting to a regular plural.
Other Similar Greek Plurals
Analysis isn’t alone. Several academic and scientific words follow their own Greek- or Latin-based plural patterns:
| Pattern | Singular | Plural |
| -is → -es | basis | bases |
| -on → -a | phenomenon | phenomena |
| -um → -a | datum | data |
| -a → -ae | formula | formulae |
| -us → -i | syllabus | syllabi |
Recognizing these patterns helps you handle unfamiliar academic vocabulary with more confidence, since the same logic applies across the group.
Origin of the Word “Analysis”
Analysis comes from the Greek term análysis, meaning “a loosening” or “a breaking up.” Its Greek plural, analýseis, is the direct ancestor of the English “analyses.” English simply preserved that Greek plural structure instead of inventing a new one which is exactly why “analyses” looks so different from a typical English plural.
American vs British English Usage
There’s no split here: American and British English spell and use both analysis and analyses identically. The only related difference sits with the verb form British writers use “analyse,” while American writers use “analyze” but the nouns themselves stay the same on both sides of the Atlantic.
Common Mistakes
Using “Analyses” as a Singular
❌ “The analyses shows a clear trend.” ✔ “The analysis shows a clear trend.”
If you’re describing one study, the singular verb and singular noun need to match.
Using “Analysis” for Multiple Studies
❌ “We conducted three analysis last quarter.” ✔ “We conducted three analyses last quarter.”
Once the number is greater than one, the plural form is required no exceptions.
Pronouncing Them Incorrectly
Because the words look alike on paper, many speakers blur the pronunciation too, which causes just as much confusion in conversation as it does in writing.
How to Use “Analysis” Correctly
Use “analysis” whenever you’re referring to a single act of examining something one dataset, one report, one situation.
- “This analysis explains why sales dipped in March.”
- “Our financial analysis supports expanding into new markets.”
- “The lab’s analysis confirmed the sample was contaminated.”
How to Use “Analyses” Correctly
Use “analyses” when you’re referring to two or more separate examinations, whether they’re from the same author or different sources.
- “The journal compared five analyses of the same climate model.”
- “Independent analyses from three universities confirmed the result.”
- “Her analyses of consumer behavior span a decade of research.”
Example Sentences
| Sentence | Correct Form Used |
| “The quarterly ______ is attached.” | analysis |
| “Several ______ contradicted the original study.” | analyses |
| “His ______ of the poem impressed the professor.” | analysis |
| “The committee reviewed all prior ______ before voting.” | analyses |
Pronunciation Guide
| Word | Phonetic Spelling | Sounds Like |
| analysis | /əˈnæl.ə.sɪs/ | uh-NAL-uh-sis |
| analyses (plural noun) | /əˈnæl.əˌsiːz/ | uh-NAL-uh-seez |
| analyses (verb form of “analyze”) | /əˈnæl.əˌsaɪz/ | uh-NAL-uh-syz |
Note that “analyses” can also function as the third-person singular verb form of “analyze” (as in “she analyses the data every week” in British spelling), and that version is pronounced differently from the plural noun a subtle detail that trips up even confident writers.
Tips to Remember the Difference
Simple Memory Trick
If the word describes one thing, it ends the way “singular” does in a soft “-is” sound. If it describes many things, it ends the way “trees” does with a plural “-eez” sound layered on top.
Visual Cue
analysis (one study)
|
|— analyses (many studies branching out)
Picture the singular form splitting apart into several strands that visual mirrors the actual meaning of the plural.
Pronunciation Trick
Say the words in rhythm to train your ear:
- Analysis → uh-NAL-uh-sis (short, closed ending)
- Analyses → uh-NAL-uh-SEEZ (long, open ending)
The longer “eez” sound is your signal that you’re dealing with more than one.
Quick Practice Quiz
Fill in the blanks with the correct word:
- The ______ shows a strong correlation between the two variables.
- Multiple ______ confirmed the same result across different labs.
- Their ______ disagrees with earlier published research.
- We need a deeper ______ before finalizing the report.
Answers: 1. analysis, 2. analyses, 3. analysis, 4. analysis
FAQs
What is the difference between analysis and analyses?
Analysis is singular and refers to one examination; analyses is plural and refers to two or more.
Is “analyses” a correct English word?
Yes it’s both the standard plural of “analysis” and the British verb form of “to analyse.”
How do you pronounce analysis and analyses?
Analysis is “uh-NAL-uh-sis”; the plural analyses is “uh-NAL-uh-seez.”
Why isn’t the plural “analysises”?
Because analysis follows the Greek “-is → -es” plural pattern, not the regular English “add -s” rule.
Can “analysis” ever refer to more than one study?
No if you mean more than one, “analyses” is the only correct choice.
Do American and British English spell these words differently?
No, the nouns are spelled identically in both; only the related verb (“analyze” vs. “analyse”) differs.
Conclusion
Understanding Analysis vs Analyses ultimately comes down to a simple count: one examination calls for analysis, while two or more call for analyses. The confusion feels bigger than it is because English usually adds “-s” for plurals, but this word pair follows a Greek pattern instead, swapping “-is” for “-es.” Once that rule clicks, the rest falls into place naturally.
Whether you’re writing a business report, an academic paper, or a quick email, checking the number before you write helps you choose correctly every time. Keep this guide handy, and you’ll never have to pause over analysis or analyses again.
Benjamin Reed is a passionate writer who shares insightful and engaging content on lifestyle, trends, and everyday topics.
