say it: uhn-pruh-FESH-uh-nuhl
unprofessional is an adjective meaning "not characteristic of or befitting a profession or one engaged in a profession". It carries one recorded sense.
not characteristic of or befitting a profession or one engaged in a profession
“described in unprofessional language so that high school students could understand it”
“was censured for unprofessional conduct”
“unprofessional repairs”
Definitions, synonyms and semantic relations for unprofessional 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.