Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unendingly is an adverb meaning "with unflagging resolve". It carries one recorded sense.
with unflagging resolve
“dance inspires him ceaselessly to strive higher and higher toward the shining pinnacle of perfection that is the goal of every artiste”
Definitions, synonyms and semantic relations for unendingly come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.