mentally deranged, supposedly by the influence of the moon; crazed.
dreamily romantic or bemused.

Also moon·strick·en [moon-strik-uh n] /ˈmunˌstrɪk ən/.

Origin of moonstruck

First recorded in 1665–75; moon + struck Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for moonstruck

Contemporary Examples of moonstruck

  • How did this happen to the man who starred in cinematic gems like Moonstruck, Honeymoon in Vegas, Raising Arizona and Valley Girl?

    The Daily Beast logo
    Lights, Camera, Cocktails

    Brody Brown

    October 22, 2011

  • As for Americans who espouse the Tea Party in any way: Why, they're overwrought, moonstruck psychos; in a word, insane.

    The Daily Beast logo
    Sanity Is Overrated

    Tunku Varadarajan

    October 29, 2010

  • He won the Academy Award for his script for the 1987 film, Moonstruck.

    The Daily Beast logo
    A Gift From Frank McCourt

    John Patrick Shanley

    July 20, 2009

Historical Examples of moonstruck

  • "You must surely be from far away, moonstruck man," she said.

    The Valor of Cappen Varra

    Poul William Anderson

  • I shouldn't wonder if Liverpool got moonstruck and just pitched overboard.

    The Pirate Shark

    Elliott Whitney

  • He's smilin' in the picture, but she's made him lockjawed an' moonstruck.

    The Burglars' Club

    Henry A. Hering

  • I hope you did not let her see how moonstruck you were on the instant.

    Lancaster's Choice

    Mrs. Alex. McVeigh Miller

  • He looked at them, thinking they must be moonstruck, for their conduct seemed inexplicable.

    East Lynne

    Mrs. Henry Wood

British Dictionary definitions for moonstruck


moonstricken (ˈmuːnˌstrɪkən)


deranged or mad
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for moonstruck

1670s, from moon (n.) + struck (see strike (v.)). Cf. Greek selenobletos. For sense, cf. moon (v.). Perhaps coined by Milton.

Online Etymology Dictionary, © 2010 Douglas Harper