coy

adjectives

affectedly modest or shy especially in a playful or provocative way

coy, demure, overmodest

is derived from

showing marked and often playful or irritating evasiveness or reluctance to make a definite or committing statement

"a politician coy about his intentions"

coy

is derived from

is similar to

vague or not clearly defined or stated

"must you be so indefinite?"; "amorphous blots of color having vague and indefinite edges"; "he would not answer so indefinite a proposal"

modestly or warily rejecting approaches or overtures

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

coy

is similar to

showing fear and lack of confidence