Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
overjealous is an adjective meaning "suspicious or unduly suspicious or fearful of being displaced by a rival". It carries one recorded sense.
suspicious or unduly suspicious or fearful of being displaced by a rival
“a jealous lover”
Definitions, synonyms and semantic relations for overjealous come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.