| but | pero |
| but on the other hand | pero al mismo tiempo |
| but then | pero al mismo tiempo |
| but then again | pero al mismo tiempo |
| Butades | Butades |
| butadiene | butadieno |
| Butan | Bután |
| butane | butano |
| butane fuel | gas butano |
| butane gas | gas butano |
| butanol | butanol |
| butanone | butanona |
| Butare | Butare |
| Butare Province | Butare |
| Butaritari | Butaritari |
| butch | marimacho |
| Butch and femme | Butch y femme |
| Butch Cassidy | Butch Cassidy |
| Butch Cassidy and the Sundance Kid | Dos hombres y un destino |
| butcher | carnicero |
| butcher's | carnicería |
| butcher's shop | carnicería |
| Butchered at Birth | Butchered at Birth |
| butchery | matanza |
| butene | buteno |
| Buteoninae | Buteoninae |
| Butes | Butes |
| Butha-Buthe District | Distrito de Butha-Buthe |
| Buthrotum | Butrinto |
| Butia | Butiá |
| butler | mayordomo |
| Butlerian Jihad | Yihad Butleriana |
| Butomaceae | Butomaceae |
| Buton Rinchen | Buton Rinchen |
| Butorides | Butorides |
| butt | objetivo |
| butte | colina aislada |
| butter | mantequilla |
| butter dish | mantequera |
| butter fingers | manos de manteca |
| butter roll | bizcocho de mantequilla |
| Butter tea | Té con mantequilla |
| butter up | lisonjear |
| buttercup | ranúnculo |
| butterfingered | desmañado |
| butterfingers | torpe |
| Butterflies Are Free | Las mariposas son libres |
| butterfly | mariposa |
| Butterfly bush | Buddleja |
| Butterfly Cluster | Cúmulo de la Mariposa |
| Butterfly diagram | Diagrama de mariposa |
| Butterfly effect | Efecto mariposa |
| Butterfly orchid | Platanthera |
| butterfly stroke | estilo mariposa |
| Butterfly sword | Hu Die Dao |
| Butterleaf National Park | Parque Nacional Butterleaf |
| buttermilk | suero de leche |
| butternut squash | calabaza de nuez |
| Butters Stotch | Leopold Butters Stotch |
| butterscotch | caramelo de mantequilla |
| Butterworth filter | Filtro de Butterworth |
| buttery | mantecoso |
| butthurt | encabronado |
| buttock | nalga |
| buttocks | parte posterior |
| button | prendedor |
| Button cactus | Epithelantha |
| button mushroom | champiñón |
| button up | abrocharse |
| button-cell battery | pilas botón |
| buttonhole | ojal |
| buttress | apoyo |
| Butty | Sándwich |
| butyl | butilo |
| Butylated hydroxyanisole | BHA |
| Butylated hydroxytoluene | BHT |
| butylene | butileno |
| Butylscopolamine | Butilescopolamina |
