Main entry: shy, timid, unsure, diffident
Definition: lacking self-confidence
Usage: stood in the doorway diffident and abashed; problems that call for bold not timid responses; a very unsure young man
Antonyms: confident
Definition: having or marked by confidence or assurance
Main entry: shy
Definition: wary and distrustful; disposed to avoid persons or things
Usage: shy of strangers
Antonyms: unwary
Definition: not alert to danger or deception
Main entry: shy
Definition: short
Usage: eleven is one shy of a dozen
Antonyms: sufficient
Definition: of a quantity that can fulfill a need or requirement but without being abundant