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