Moonstruck is an adjective that means dreamily romantic or bemused by love.
Our word of the day combines the familiar word ‘moon’ with the past participle of strike, to give us a way to describe someone who’s been metaphorically ‘struck’ or affected by the moon. Keep in mind that in the late 17th century, when moonstruck came to life, it was common for people to believe the moon had special powers to affect our behavior. Today, we simply think of moonstruck as a metaphor for being high on love.
Having a crush on his classmate has put Kevin in a strange mood. I’ve never seen him this moonstruck before.