diffidence

noun

Modesty or shyness resulting from a lack of self-confidence.

SYNONYMS

apprehensionbashfulnessembarrassmenthesitancyhumblenesshumilityinhibitioninsecurityintroversionmeeknessmodestnessmodestynervousnessreluctancereserverestraintreticenceself-consciousnessself-doubtself-effacementshamesheepishnessshynesstimiditytimidnesstimorousnessunassertivenessuncertaintyuneaseuneasiness