| let off | grant exemption or release to; "Please excuse me from this class" | en |
| let off | If you let off an explosive or a gun, you explode or fire it. A resident of his neighbourhood had let off fireworks to celebrate the Revolution | en |
| let off | If you let someone off, you give them a lighter punishment than they expect or no punishment at all. Because he was a Christian, the judge let him off When police realised who he was, they asked for an autograph and let him off with a warning | en |
| let off | free, release, set free; (Slang) to fart | en |
| let off | If someone in authority lets you off a task or duty, they give you permission not to do it. In those days they didn't let you off work to go home very often | en |
| letoff | A device for letting off, releasing, or giving forth, as the warp from the cylinder of a loom | en |