Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
undeceived is an adjective meaning "freed of a mistaken or misguided notion". It carries one recorded sense.
freed of a mistaken or misguided notion
“some people are still not disabused of the old idea that the universe revolves around the Earth”
Definitions, synonyms and semantic relations for undeceived come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.