Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
trigger-happy is an adjective meaning "irresponsible in the use of firearms". It carries 2 recorded senses.
irresponsible in the use of firearms
Definitions, synonyms and semantic relations for trigger-happy come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.