1.Definition: affectedly modest or shy especially in a playful or provocative way

Related Adjective(s):demure, overmodest

2.Definition: modestly or warily rejecting approaches or overtures

"Like a wild young colt, very inquisitive but very coy and not to be easily cajoled"

3.Definition: showing marked and often playful or irritating evasiveness or reluctance to make a definite or committing statement

"A politician coy about his intentions"