WordNet: incertain, uncertain, unsure

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"

• attribute certainty

• attribute assurance, authority, confidence, self-assurance, self-confidence, sureness

• similar to ambivalent

• similar to doubtful, dubious

• similar to groping

incertain

• (suomi) epävarma (synonyymi)

uncertain

• (englanti) certain (antonym)

• (englanti) uncertainness (derivationally related)
• (suomi) epävarma (synonyymi)

unsure

• (englanti) sure (antonym)
• (suomi) epävarma (synonyymi)