moonstruck🔊

(archaic) Of a person: perverted or insane, originally supposedly due to the influence of the Moon; compare (lunatic).

(figurative) Showing irrational behavior, especially of a romantic or sentimental nature; in an entranced or distracted state, especially due to being in love.

(obsolete except UK, regional) Made physically sick, or (like fish) unsuitable for food, by the supposed effect of moonlight.