firm proof (0 synonym found)

We don't have synonyms for firm proof yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are fireproof.

We don't have any synonyms for firm proof yet.

Did you mean…

fireproof

Think firm proof belongs in the thesaurus? Recommend it and we'll take a look.

Definition of firm proof:

°Resistant to damage from fire.
"The fireproof safe will protect documents inside for up to four hours in a standard house fire."
°To make resistant to damage from fire.
"I hastily fireproofed my clothing somewhat by pouring a bucket of water over myself before dashing into the flames."
Definition of firm proof:

°Resistant to damage from fire.
"The fireproof safe will protect documents inside for up to four hours in a standard house fire."
°To make resistant to damage from fire.
"I hastily fireproofed my clothing somewhat by pouring a bucket of water over myself before dashing into the flames."
Back to Top