adjective, gid·di·er, gid·di·est.
- affected with vertigo; dizzy.
- attended with or causing dizziness: a giddy climb.
- frivolous and lighthearted; impulsive; flighty: a giddy young person.
verb (used with or without object), gid·died, gid·dy·ing.
- to make or become giddy.
adjective -dier or -diest
- affected with a reeling sensation and feeling as if about to fall; dizzy
- causing or tending to cause vertigo
- impulsive; scatterbrained
- my giddy aunt an exclamation of surprise
verb -dies, -dying or -died
- to make or become giddy
Old English gidig, variant of gydig “insane, mad, stupid, possessed (by a spirit),” probably from Proto-Germanic *gud-iga-, from *gudam “god” + *-ig “possessed.” Meaning “having a confused, swimming sensation” is from 1560s. Meaning “elated” is from 1540s. Related: Giddily; giddiness.