Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unfastidious is an adjective meaning "not exacting in nutritional requirements". It carries 2 recorded senses.
marked by an absence of due or proper care or attention to detail; not concerned with cleanliness
“unfastidious in her dress”
Definitions, synonyms and semantic relations for unfastidious come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.