incertain

Adjective

WordNet 3.0

Adjective (1)

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”Synonyms: uncertain unsure

Webster's Dictionary (GCIDE)

Incertain \In*cer"tain\, n. [Pref. in- not + certain: cf. F. incertain, L. incertus. See Certain.] Uncertain; doubtful; unsteady. -- In*cer"tain*ly, adv. [1913 Webster]

Very questionable and of uncertain truth. --Sir T. Browne. [1913 Webster]