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-aggrandisement is a noun meaning "an act undertaken to increase your own power and influence or to draw attention to your own importance". It carries one recorded sense.
an act undertaken to increase your own power and influence or to draw attention to your own importance
Definitions, synonyms and semantic relations for self-aggrandisement come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.