Lacking confidence.

lacking self-confidence; "stood in the doorway diffident and abashed"; "problems that call for bold not timid responses"; "a very unsure young man"[syn: diffident ][ant: confident ]

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"[syn: uncertain ][ant: certain ]

adjective

certain , definite , secure , sure , undoubted

adjective

betwixt and between , borderline , distrustful , dubious , fluctuant , fly-by-night * , hesitant , iffy * , in a quandary , indecisive , indeterminate , irresolute , lacking , mistrustful , open , problematic , rootless , shaky , skeptical , suspicious , touch and go , unassured , uncertain , unclear , unconfident , unconvinced , undecided , undependable , unreliable , unstable , untrustworthy , untrusty , up for grabs , vacillating , wavering , weak , wimpy , wobbly , chancy , clouded , doubtful , dubitable , equivocal , inconclusive , problematical , questionable , undetermined , unresolved , unsettled , vague , infirm , precarious , tottering , tottery , unsteady , dangerous , hazardous , insecure , timid