| newspaper | |
| next track button | |
| night with stars | |
| nine o’clock | |
| nine-thirty | |
| nitrogenous fertiliser | |
| no | |
| no bicycles | |
| no entry | |
| noise | |
| no littering | |
| no mobile phones | |
| non-drinking water | |
| non-existent | |
| non-governmental organisation | |
| non-ionising radiation | |
| non-passenger coaching stock | |
| no one under eighteen | |
| no pedestrians | |
| normalisation | |
| Normalised Sorting | |
| nose | |
| no smoking | |
| notebook with decorative cover | |
| now | |
| no way | |
| nuclear research centre | |
| number plate | |
| nut and bolt | |
| oat flakes | |
| observation car | |
| o button | |
| ochre | |
| oden | |
| odour | |
| odourless | |
| odour nuisance | |
| odourous | |
| oedema | |
| oenology | |
| oesophagus | |
| of a certain colour | |
| of a colour | |
| offence | |
| office building | |
| ogre | |
| oh | |
| oil drum | |
| ok | |
| ok hand | |
| British English |