beat (one's) head against a stone wall
beat (one's) head against a stone wall
To attempt, continuously and fruitlessly, to accomplish some task or achieve some goal that is or seems ultimately hopeless. I feel like I've been beating my head against a stone wall trying to understand this math equation. Some people are never going to agree with you on this, so it's no use beating your head against a stone wall to try and convince everyone.
See also: beat, head, stone, wall
Farlex Dictionary of Idioms.
- knock (one's) head against a (brick) wall
- knock (one's) head against a/the wall
- knock head against a brick wall
- bang (one's) head against a brick wall
- bang (one's) head against a wall
- bang your head against a brick wall
- be banging (one's) head against a brick wall
- be banging your head against a brick wall
- be banging, etc. your head against a brick wall
- be hitting (one's) head against a (brick) wall