Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unimpassioned is an adjective meaning "free from emotional appeal; marked by reasonableness". It carries one recorded sense.
free from emotional appeal; marked by reasonableness
“answered with an unimpassioned defense”
“the unimpassioned intellect”
Definitions, synonyms and semantic relations for unimpassioned come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.