Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
self-styled is an adjective meaning "as claimed by and for yourself often without justification". It carries one recorded sense.
as claimed by and for yourself often without justification
“the self-styled `doctor' has no degree of any kind”
Definitions, synonyms and semantic relations for self-styled come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.