Word Forms of "costar" (5 forms)

Noun

Form	Word
Plural	costars

Pluralcostars

Verb

Form	Word
Participle, Past	costarred
Participle, Present	costarring
Past	costarred
Present, Singular, Third-Person	costars

Participle, Pastcostarred

Participle, Presentcostarring

Pastcostarred

Present, Singular, Third-Personcostars

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.