Definition of hand-waving in English:

hand-waving

Syllabification: hand-wav·ing

noun

The use of gestures and insubstantial language meant to impress or convince: their patriotic hand-waving lacked sincerity [as modifier]: her path of logic and hand-waving explanations
More example sentences
  • To this notorious ‘proof,’ the near-universal reaction of the beginning student of epistemology is bewilderment: how could Moore possibly have thought that a skeptic's profound doubts can be countered by a bit of hand-waving?
  • Like ‘love’ and ‘God,’ human dignity is usually verbal hand-waving deployed when people don't really know what they are trying to protect or assert.
  • Second, even if it is acknowledged, the ‘response’ is faculty lounge speculation and hand-waving about how this might all be rationalized.

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