"coyer" in the adjective sense

1. coy, demure, overmodest

affectedly modest or shy especially in a playful or provocative way

2. coy

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

"a politician coy about his intentions"

3. coy

modestly or warily rejecting approaches or overtures

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

Source: WordNet® (An amazing lexical database of English)

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