Word Forms of "grumble" (5 forms)

Noun

Form	Word
Plural	grumbles

Pluralgrumbles

Verb

Form	Word
Participle, Past	grumbled
Participle, Present	grumbling
Past	grumbled
Present, Singular, Third-Person	grumbles

Participle, Pastgrumbled

Participle, Presentgrumbling

Pastgrumbled

Present, Singular, Third-Persongrumbles

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