Webster’s Revised Unabridged Dictionary · 1913
Dizzy
Diz′zy (dĭz′zy̆), a. [Compar. Dizzier (-zĭ·ẽr); superl. Dizziest.] [OE. dusi, disi, desi, foolish, AS. dysig; akin to LG. düsig dizzy, OD. deuzig, duyzig, OHG. tusig foolish, OFries. dusia to be dizzy; LG. dusel dizziness, duselig, dusselig, D. duizelig, dizzy, Dan. dösig drowsy, slepy, döse to make dull, drowsy, dös dullness, drowsiness, and to AS. dwǣs foolish, G. thor fool. √71. Cf. Daze, Doze.] 1. Having in the head a sensation of whirling, with a tendency to fall; vertiginous; giddy; hence, confused; indistinct.
Alas! his brain was dizzy. Drayton.
2. Causing, or tending to cause, giddiness or vertigo.
To climb from the brink of Fleet Ditch by a dizzy ladder. Macaulay.
3. Without distinct thought; unreflecting; thoughtless; heedless. "The dizzy multitude." Milton.
Diz′zy, v. t. [imp. & p. p. Dizzied; p. pr. & vb. n. Dizzying.] To make dizzy or giddy; to give the vertigo to; to confuse.
If the jangling of thy bells had not dizzied thy understanding. Sir W. Scott.