0 intentionally keeping something secret:
She's very coy about her age.
1 (especially of women) being or pretending to be shy, or like a child:
2 acting shy, uncertain, or unwilling to say much, often in order to increase interest in something by keeping back information about it:
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.