Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unkept is an adjective meaning "(especially of promises or contracts) having been violated or disregarded". It carries one recorded sense.
(especially of promises or contracts) having been violated or disregarded
“broken (or unkept) promises”
“broken contracts”
contract
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for unkept come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.