Make resistant to fire.
Impervious to damage by fire.
Roget 664: safe, secure, sure; in safety, in security; on the safe side; under the shield of, under the shade of, under the wing of, under the shadow of one's wing; under cover, under lock and key; out of danger, ... show more
Moby thesaurus: airtight, ballproof, bombproof, bulletproof, burglarproof, corrosionproof, dampproof, fire-resistant, fire-resisting, fire-retardant, fire-retarded, fireproofed, flameproof, foolproof, hermetic, holeproof, impervious to, insulate, leakproof, noiseproof ... show more.
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