Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unstintingly is an adverb meaning "in an unstinting manner". It carries one recorded sense.
in an unstinting manner
Definitions, synonyms and semantic relations for unstintingly come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.