1. somewhat shy, modest, or reserved; displaying a degree of coyness.
Usage: informal; often used to describe behavior or demeanor that is mildly evasive or playfully shy

Examples

• She gave a coyish smile when asked about her new relationship.
• His coyish response to the compliment made everyone laugh.
• The actress adopted a coyish manner during the interview.
• He was coyish about revealing his true feelings.
• Her coyish glance suggested she was interested but not quite ready to commit.