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1. An impressive level of success. "Dizzying heights" is a more common version of the phrase. Primarily heard in UK. Your company will never reach such dizzy heights if you don't devote your full attention to it.
2. A high or extreme degree of something. Primarily heard in UK. Why are our profits now so much lower than the dizzy heights they reached last month?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
dizzy heightsBRITISH or
1. You use dizzy heights or dizzying heights to talk about a very high level of success. She had first known such dizzy heights in the 1960's when she became one of the top exponents of black American music. She was a poor girl propelled to the dizzying heights of fame by a group of powerful agents. Note: This expression is sometimes used ironically to say that someone has not achieved very much at all. After three and a half years, I had reached the dizzy heights of assistant account handler.
2. You use dizzy heights or dizzying heights to talk about a very high amount or level of something. The Dow Jones has scaled the dizzy heights to reach 10,000. The cost of oil imports reached dizzying heights before falling back and rising again in 1990. Note: This expression is sometimes used ironically to say that something is not at a very high level. The meat content of the pie can soar to the dizzy heights of 25 per cent.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012