say it: kuhm-BUHST
combust is a verb meaning "cause to burn or combust". It carries 5 recorded senses.
cause to burn or combust
“The sun burned off the fog”
“We combust coal and other fossil fuels”
start to burn or burst into flames
“Marsh gases ignited suddenly”
“The oily rags combusted spontaneously”
get very angry and fly into a rage
“The professor combusted when the student didn't know the answer to a very elementary question”
“Spam makes me go ballistic”
cause to become violent or angry
“Riots combusted Pakistan after the U.S. air attacks on Afghanistan”
undergo combustion
“Maple wood burns well”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for combust come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.