| 1. | (in boxing) an illegal blow below the waist of an opponent. |
| 2. | an unfair or unsportsmanlike criticism or attack. |

| low blow n.
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low blow
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low blow
An unscrupulous attack; an insult. For example, When my roommate moved out without a word of warning, leaving me to pay the entire rent, that was a low blow, or She wanted to win the argument, but bringing up his failed marriage was a low blow. This term alludes to the illegal practice of hitting an opponent in boxing below the belt. [c. 1950]