Webster's English Dictionary

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dizzy

1. diz.zy \'diz-e-\ aj [ME disy, fr. OE dysig stupid; akin to OHG tusig 
   stupid, L Xfurere to rage - more at DUST 1: FOOLISH, SILLY  2a: having a 
   whirling sensation in the head with a tendency to fall  2b: mentally 
   confused  3a: causing giddiness or mental confusion  3b: caused by or 
   marked by giddiness  3c: extremely rapid 
2. dizzy vt 1: to make dizzy or giddy  2: BEWILDER