| bravado | A display of boldness or confidence intended to impress or intimidate | |
| brazen | Bold and without shame | |
| brevity | Concise and exact use of words in writing or speech | |
| bromide | A trite and unoriginal idea or remark, typically intended to soothe or placate | |
| brusque | Abrupt or offhand in speech or manner | |
| bucolic | Relating to the pleasant aspects of the countryside and country life | |
| bugbear | A cause of obsessive fear, irritation, or loathing | |
| bumptious | Self-assertive or proud to an irritating degree | |
| bungle | To carry out a task clumsily or incompetently, leading to a mistake or undesirable outcome | |
| buoyant | Able to stay afloat or rise to the top of a liquid or gas | |