Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unpretentiously is an adverb meaning "in an unpretentious manner". It carries one recorded sense.
in an unpretentious manner
“she was unpretentiously dressed even though she was the guest of honor”
Definitions, synonyms and semantic relations for unpretentiously come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .