Word Forms of "knuckleball" (5 forms)

Noun

Form	Word
Plural	knuckleballs

Pluralknuckleballs

Verb

Form	Word
Participle, Past	knuckleballed
Participle, Present	knuckleballing
Past	knuckleballed
Present, Singular, Third-Person	knuckleballs

Participle, Pastknuckleballed

Participle, Presentknuckleballing

Pastknuckleballed

Present, Singular, Third-Personknuckleballs

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