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