failproof is a valid English word

Scrabble validity: invalid ( international - Sowpods, US - Twl06 )
iScramble validity: invalid
QuickWords validity: invalid

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Meanings

Adjective (COMPARABLE)

Comparative Superlative
more failproof most failproof
    Resistant to failure; that cannot go wrong.

failproof is not a Scrabble valid word


failproof is not an iScramble valid word


failproof is not an QuickWords valid word


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Same letters words (Anagrams)


Same letters plus one


Same letters minus one