say it: uhn-uh-FISH-uhl
unofficial is an adjective meaning "not having official authority or sanction". It carries 2 recorded senses.
not having official authority or sanction
“a sort of unofficial mayor”
“an unofficial estimate”
“he participated in an unofficial capacity”
not officially established
“the early election returns are unofficial”
Definitions, synonyms and semantic relations for unofficial 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.