1 pretending to be shy
VERBS be | go
ADV. all, extremely, very He went all coy when I mentioned her name. | a bit, a little, rather She gave him a rather coy look.
2 unwilling to say sth directly
VERBS be | remain
ADV. extremely, very | a little, rather Alicia was a little coy about how much the new dress had cost. | uncharacteristically