Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
incertain is an adjective meaning "lacking or indicating lack of confidence or assurance". It carries one recorded sense.
lacking or indicating lack of confidence or assurance
“uncertain of his convictions”
“unsure of himself and his future”
“moving with uncertain (or unsure) steps”
“an uncertain smile”
“touched the ornaments with uncertain fingers”
Definitions, synonyms and semantic relations for incertain come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.