Word Forms of "foolproof" (6 forms)

Adjective

Form	Word
Comparative	more foolproof
Superlative	most foolproof

Comparativemore foolproof

Superlativemost foolproof

Verb

Form	Word
Participle, Past	foolproofed
Participle, Present	foolproofing
Past	foolproofed
Present, Singular, Third-Person	foolproofs

Participle, Pastfoolproofed

Participle, Presentfoolproofing

Pastfoolproofed

Present, Singular, Third-Personfoolproofs

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