beat one's head against the wall
Also, bang or run one's head against or into a brick wall. Waste one's time in a hopeless enterprise, as in I have tried many times to convince him to stop smoking, but I'm beating my head against a brick wall. The metaphoric phrase alludes to a physical expression of frustration. [Late 1500s] Also see beat the air.
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| a stew of meat, vegetables, potatoes, etc. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |