Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
high-handedness is a noun meaning "overbearing pride evidenced by a superior manner toward inferiors". It carries one recorded sense.
overbearing pride evidenced by a superior manner toward inferiors
Definitions, synonyms and semantic relations for high-handedness come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.