[adjective] [formal]Combustible means able to burn easily.Wood and coal are both combustible substances.The explosion failed to ignite the highly combustible material held in the storage tanks.(formal) If a person is combustible, they are easily annoyed or excited.The government has been combustible since the attempted military coup last December.
COMBUSTIBLE
Meaning of COMBUSTIBLE in English
Cambridge English vocab. Кембриджский английский словарь. 2012