| 100% | PEG | 3 | "Square ___ in a round hole" |
| 100% | PEG | 3 | Square ___ in a round hole |
| 97% | PEG | 3 | Square ___ in a round hole (misfit) |
| 94% | PEG | 3 | A square ___ in a round hole |
| 94% | MISFIT | 6 | Square peg in a round hole |
| 91% | MISFIT | 6 | Square peg in a round hole, so to speak |
| 89% | PEG | 3 | "Like a square ___ in a round hole" |
| 89% | PEG | 3 | Like a square ___ in a round hole |
| 89% | PEG | 3 | "Like a square ___ in a round hole." |
| 88% | PEG | 3 | Like a square ___ in a round hole (misfit) |
| 86% | ODD | 3 | Like a square peg in a round hole |
| 85% | ERRS | 4 | Puts a round peg in a square hole, say |
| 84% | PEG | 3 | You can't put a round __ in a square hole |
| 83% | MISFIT | 6 | Round peg in a square hole |
| 82% | PEG | 3 | A square one doesn't fit in a round hole |
| 82% | PEG | 3 | Square thing that won't fit in a round hole |
| 81% | ODD | 3 | "___ one out" (square peg in a round hole) |
| 81% | PEG | 3 | You can't fit a square __ in a round hole |
| 81% | PEG | 3 | You can't put a square __ in a round hole |
| 80% | PEG | 3 | A square one won’t fit in a round hole |
| 78% | ERR | 3 | Try to fit a square peg in a round hole, e.g. |
| 74% | SQUAREPEG | 9 | Something that won't fit in a round hole: 2 wds. |
| 73% | SQUAREPEG | 9 | Item that can’t fit in a round hole, in an idiom |
| 72% | HOLE | 4 | Square peg in a round ___ |
| 71% | PEGIN | 5 | A square ___ a round hole |
| 70% | MISFITS | 7 | Round pegs in square holes |
| 69% | PEG | 3 | Square item for a round hole? |
| 67% | DOUGHNUT | 8 | Round pastry with a hole in the middle |
| 66% | PIZZAPIE | 8 | Round item in a square box |
| 66% | PIZZA | 5 | Round food in a square box |