adj. diz·zi·er, diz·zi·est
1. Having a whirling sensation and a tendency to fall.
a. Bewildered or confused: "I was dizzy with anger and shame" (Amy Benson).
b. Slang Scatterbrained or silly.
3. Producing or tending to produce giddiness: a dizzy height.
4. Characterized by impulsive haste; very rapid: "There he sat ... gabbing at his usual dizzy pace" (H.L. Mencken).
tr.v. diz·zied, diz·zy·ing, diz·zies
1. To cause to have a whirling sensation.
2. To confuse or bewilder.
[Middle English dusie, disi, from Old English dysig, foolish.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.