Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
quick-tempered is an adjective meaning "quickly aroused to anger". It carries one recorded sense.
quickly aroused to anger
“a hotheaded commander”
Definitions, synonyms and semantic relations for quick-tempered come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.