anxiety diffidence uncertainty hesitancy humility timidity humbleness inhibition meekness nervousness timidness timorousness worry apprehension fear unease uneasiness unsureness doubt indecision vacillation reserve modesty bashfulness reticence restraint shyness sheepishness reluctance constraint embarrassment backwardness coyness hesitation introversion quietness demureness repression wariness shame tension hesitance discomfort discipline suppression discretion continence nerves doubtfulness reservation trepidation strain apprehensiveness suspense edginess indecisiveness confusion irresolution perplexity reservedness fearfulness caution chariness suspicion unpretentiousness formality distance aloofness coldness secretiveness unresponsiveness silence taciturnity uncommunicativeness lowliness submissiveness unobtrusiveness discreetness unostentatiousness detachment coolness calmness control decency docility guardedness obedience resignation awkwardness abashment faintheartedness cowardice delicacy stiltedness woodenness unnaturalness quiet coquettishness skittishness remoteness