fireproof, a. incombustible, asbestic.

fireside, n. hearth, ingleside.

fireworks, n. pl. Associated words: pyrotechnics, pyrotechnist, pyrotechnician, pyrotechnic, pyrotechny.

fire-worship, n. pyrolatry, Parseeism, Mazdeism, Magianism, Zoroastrianism.

fire-worshiper, n. pyrolater, Gheber, Parsee, Magian, Zoroastrian.

firm, a. [fast], [immovable], [secure]; [compact], [solid], dense, compressed; [fixed], [resolute], [constant], [unwavering], unshaken, [steadfast], [stanch], determined, [invincible], [inflexible], incompliant. Antonyms: flaccid, [soft], [vacillating], [irresolute], [lax], [yielding], facile, [inconstant].

first, a. earliest; foremost, [leading], [chief], premier; primary, primal, primordial, [primitive], primeval, pristine, [original], aboriginal, primogenial; [elementary], [rudimentary], initial.

first, adv. primarily, originally.

firstborn, n. Associated words: primogeniture, primogenial, primogenitureship.

first-formed, a. [original], protoplastic.