From Middle French inflammable, from Medieval Latin īnflammābilis, from Latin inflammo, from in + flamma.

• enPR: ĭnʹflăm-ə-bəl, IPA: /ɪnˈflæməbəl/

inflammable

1. Capable of burning; easily set on fire.

   Synonyms: combustible, flammable

   Antonyms: fireproof, incombustible, nonflammable, noninflammable, unflammable, uninflammable

   • 1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887, →OCLC ↗:

     On he went a few paces and touched a second, then a third, and a fourth, till at last we were surrounded on all three sides by a great ring of bodies flaring furiously, the material with which they were preserved having rendered them so inflammable that the flames would literally spout out of the ears and mouth in tongues of fire a foot or more in length.

2. (figuratively) Easily excited; set off by the slightest excuse; easily enraged or inflamed.

   Synonyms: hot-headed, quick to anger

   Antonyms: level-headed, unflappable

3. (nonstandard) Incapable of burning; not easily set on fire.

   Synonyms: fireproof, incombustible, nonflammable, noninflammable, unflammable, uninflammable

   Antonyms: combustible, flammable

• inflammable air
• inflammable cinnabar
• inflammability
• inflammation
• inflame

• French: inflammable
• German: brennbar, entflammbar
• Italian: infiammabile
• Portuguese: inflamável
• Russian: легковоспламеня́ющийся
• Spanish: inflamable, combustible

• Russian: вспы́льчивый

inflammable (plural inflammables)

1. Any inflammable substance.