The term 'behaves coquettishly' can be defined as acting in a flirtatious manner. This can be broken down into two crossword solutions: 'FLIRTS' and 'teases'. Flirting is the act of expressing romantic or sexual interest in someone, usually through body language, conversation, or other subtle means. Teasing is the act of making lighthearted jokes or comments at someone's expense, often in a playful or flirtatious way. Both of these behaviors are common when someone is behaving coquettishly.