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Apostrophe

Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025

Definition

An apostrophe shows possession or marks missing letters in a contraction.

Course connection

ACT English: Conventions of Standard English: Punctuation

Keep studying

Review this concept in ACT English: Conventions of Standard English: PunctuationACT course hub

Apostrophe cheat sheet for homework

visual study aid

5 Must Know Facts For Your Next Test

  1. Apostrophe appears across 3 ACT guides as a remediation concept.
  2. Plural nouns usually do not need apostrophes unless they are possessive.