Nouns ending in -s, -x, -z, -ch, or -sh add -es to form the plural. This makes the word easier to pronounce.
Synopsis is regular. It follows the -es Addition rule.
Use plural verbs: "The synopsises are ready" (not "is ready").
Yes. The plural synopsises is standard across all English variants.
The word synopsis follows the standard English pluralization rule. When forming the plural, synopsis becomes synopsises. This follows the -es Addition pattern, which is one of the most common plural rules in English.
Understanding why synopsis becomes synopsises helps with spelling and pronunciation. Nouns ending in -s, -x, -z, -ch, or -sh add -es to form the plural. This makes the word easier to pronounce.
When using synopsises in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The synopsises are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.