| Butan | butane |
| Butanol | butanol |
| Butanal | Butyraldehyde |
| Butanon | butanone methyl ethyl ketone |
| Butangas | butane butane gas |
| Buten | butylene |
| buten | in front of outside |
| Bhutan | Bhutan |
| Bütten | Butten |
| Butansäure | butanoic acid |
| Butt | flounder |
| Button | badge button |
| Butyl | butyl |
| Butz | apple core |
| Butzen | core |
| Butō | buto butoh |
| butch | butchy |
| Sutane | cassock |
| Muta | plosive stop |
| Mutant | mutant |