| Clod |
| Lout |
| Boor |
| Idiot |
| Dimwit |
| Lowlife |
| Blockhead |
| Obtuse one |
| Stupid sort |
| No Einstein |
| Slow learner |
| Stupid person |
| Stunted person |
| Boorish person |
| Hardly a brainiac |
| Disparaging epithet |
| Simpleton, disparagingly |
| Hardly a Mensa candidate |
| Mentally defective person |