coy, demure, overmodest -- (affectedly modest or shy especially in a playful or provocative way)
coy -- (showing marked and often playful or irritating evasiveness or reluctance to make a definite or committing statement; "a politician coy about his intentions")
coy -- (modestly or warily rejecting approaches or overtures; "like a wild young colt, very inquisitive but very coy and not to be easily cajoled")