Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
ill-treatment is a noun meaning "cruel or inhumane treatment". It carries one recorded sense.
cruel or inhumane treatment
“the child showed signs of physical abuse”
Definitions, synonyms and semantic relations for ill-treatment come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.