Etymology
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inflammable (adj.)

"able to be set alight," c. 1600, from French inflammable, from Medieval Latin inflammabilis, from Latin inflammare "to set on fire" (see inflame).Since 1980s use of the word, especially in safety warnings, has been sometimes discouraged for fear it could be misunderstood as meaning "non-flammable" through confusion of the two prefixes in-. The word was used earlier in medicine in the sense "liable to inflammation" (early 15c.). Related: Inflammability.

updated on December 08, 2020

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Definitions of inflammable from WordNet

inflammable (adj.)
easily ignited;
Synonyms: flammable
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.