1. (n.) Distrust of one's self or one's own powers; lack of self-reliance; modesty; modest reserve; bashfulness\.

2. (n.) The state of being diffident; distrust; want of confidence; doubt of the power, ability, or disposition of others.

Pyrrhonism afraidness apprehension bashfulness boggle boggling caution cautiousness compunction demur demurral distrust distrustfulness doubt doubtfulness dubiety dubiousness falter faltering fearfulness half-belief hesitance hesitancy hesitating hesitation jumpiness lack of self-confidence lack of self-reliance leeriness misdoubt misgiving mistrust mistrustfulness modesty objection pause protest qualm qualm of conscience qualmishness question recoil scruple scrupulosity scrupulousness self-depreciation self-detraction self-distrust self-doubt self-effacement shadow of doubt shilly-shally shilly-shallying shrinking shrinkingness shyness skepticalness skepticism skittishness stage fright startlishness stickling suspicion suspiciousness tentativeness timidity timorousness total skepticism uncertainty wariness weak ego