make head swim

make (one's) head swim

1. To make one feel very dazed, bewildered, or shocked. He was so overwhelmed with information on his first day on the job that it was making his head swim. Looking at all the legal mumbo jumbo in these contracts always makes my head swim.
2. To cause one to feel lightheaded, dizzy, or delirious. The fumes from these cleaning products are making my head swim. Tall heights make my head swim, so I try to avoid them as much as possible.
See also: head, make, swim
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

make someone's head swim

 and make someone's head spin 
1. Fig. to make someone dizzy or disoriented. Riding the merry-go-round makes my head spin. Breathing the gas made my head swim.
2. Fig. to confuse or overwhelm someone. All these numbers make my head swim. The physics lecture made my head spin.
See also: head, make, swim
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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