Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unbrainwashed is an adjective meaning "not successfully subjected to brainwashing". It carries one recorded sense.
not successfully subjected to brainwashing
“despite the torture and the psychological pressure some POWs remained unbrainwashed”
Definitions, synonyms and semantic relations for unbrainwashed come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .