Related Clues:

• Sartre's ''virtue of the lukewarm''
• Toss head showing lack of confidence
• Lack of assertiveness
• Reserve's lack of vanity
• Humility means transcending yourself, primarily
• Quality feigned by a humblebrag
• Timid behaviour
• Is across the Channel in nothing less than moody reserve
• Opposite of boldness
• Way, way, way at the back showing shyness
• Reason for a cover-up?
• Blaise, perhaps, having way with pen
• Unassuming quality
• Wavering, delay
• It might go with a miniskirt