Definition of "giddy" in English

adjective

1. (predicative only) Feeling a sense of spinning in the head, causing a perception of unsteadiness and being about to fall down; dizzy.

   • The man became giddy upon standing up so fast.

2. (attributive) Causing or likely to cause dizziness or a feeling of unsteadiness.

   • They climbed to a giddy height.

3. Moving around something or spinning rapidly.

4. Unable to concentrate or think seriously; easily excited; impulsive; also, lightheartedly silly; frivolous.

5. Joyfully elated; overcome with excitement or happiness.

   • The boy was giddy when he opened his birthday presents.

6. Feeling great anger; furious, raging.

7. (British, dialectal, agriculture, veterinary medicine) Of an animal, chiefly a sheep: affected by gid (“a disease caused by parasitic infestation of the brain by tapeworm larvae”), which may result in the animal turning around aimlessly.

8. (obsolete, figuratively) Of a thing, especially a ship: unsteady, as if dizzy.

noun

1. Someone or something that is frivolous or impulsive.

2. (British, agriculture, veterinary medicine) Synonym of gid (“a disease caused by parasitic infestation of the brain by tapeworm larvae”).

verb

1. (transitive) To make (someone or something) dizzy or unsteady; to dizzy.

2. To become dizzy or unsteady.

3. To move around something or spin rapidly; to reel; to whirl.