English UsageGrammar guide

Plural of Synopsis

“Synopsis” forms the irregular plural “synopses.” Use “synopsis” for one summary and “synopses” for more than one. This lexical grammar question is separate from any specialist document rule about what a particular synopsis section must contain.

Quick answer

The plural of “synopsis” is “synopses.”

Key details

Confusion Familyirregular Greek-derived plural
Rule Family-is to -es plural
Termssynopsis, synopses
Variant ScopeKeep plural formation separate from specialist Writing or reporting requirements for a synopsis section.

Choose the right form

Decision table for Plural of Synopsis
Meaning / situationForm / constructionDecision
one summarysynopsisSingular.
several summariessynopsesStandard plural.

Quick tests

Plural-choice test

Are you referring to more than one synopsis?

If yes: Use “synopses.”

If no: Use singular “synopsis.”

Caveat: The plural spelling changes to -ses; this guide does not prescribe the content of a specialist synopsis document.

Examples

Example

The catalog includes short synopses of all ten films.

Multiple summaries take “synopses.”

Example

She wrote a synopsis of the novel.

One summary takes singular “synopsis.”

Example

The reviewers compared the two synopses.

The irregular plural is “synopses.”

Further guidance

Core difference

Use “synopses” for more than one synopsis.

Fast Test

Choose singular “synopsis” for one and plural “synopses” for more than one.

Usage Boundary

Do not use “synopsises” as the ordinary plural.

Sources and evidence

Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.

  1. SYNOPSIS | English meaning - Cambridge Dictionary (opens in a new tab)Cambridge University Press · Cambridge records synopses as the plural of synopsis and supplies the plural pronunciation.

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