| BULLETPROOF | • bulletproof adj. (Of a material) Capable of withstanding a direct shot by a bullet fired from a gun. • bulletproof adj. (Idiomatic) Reliable, infallible, sturdy or error-tolerant. • bulletproof adj. (Usually of an idea or concept) Unbreakable, very tough. |
| BULLETPROOFED | • bulletproofed v. Simple past tense and past participle of bulletproof. • BULLETPROOF v. to make impenetrable to bullets. |
| BULLETPROOFING | • bulletproofing v. Present participle of bulletproof. • BULLETPROOF v. to make impenetrable to bullets. |
| BULLETPROOFS | • bulletproofs v. Third-person singular simple present indicative form of bulletproof. • BULLETPROOF v. to make impenetrable to bullets. |
| COBALTIFEROUS | • cobaltiferous adj. Containing or yielding cobalt. • COBALTIFEROUS adj. bearing cobalt. |
| COUNTERBLUFF | • counterbluff n. A bluff made in response to an opponent’s bluff; a counterploy. • COUNTERBLUFF n. actions or words intended as a bluff, made in opposition to someone else's bluff. |
| COUNTERBLUFFS | • counterbluffs n. Plural of counterbluff. • COUNTERBLUFF n. actions or words intended as a bluff, made in opposition to someone else's bluff. |
| FILIBUSTEROUS | • filibusterous adj. Filibustering. • FILIBUSTEROUS adj. like a filibuster. |
| FLUTTERBOARD | • flutterboard n. (US) A buoyancy board made of foam, used to support the body when in water. • FLUTTERBOARD n. a kind of swimming aid, a kickboard. |
| FLUTTERBOARDS | • flutterboards n. Plural of flutterboard. • FLUTTERBOARD n. a kind of swimming aid, a kickboard. |
| STROMBULIFEROUS | • STROMBULIFEROUS adj. bearing spirally coiled organs. |
| TROUBLEFREE | • troublefree adj. Alternative spelling of trouble-free. • trouble-free adj. Without trouble. • TROUBLEFREE adj. free of trouble. |
| UNCOMFORTABLE | • uncomfortable adj. Not comfortable; causing discomfort. • uncomfortable adj. Experiencing discomfort. • uncomfortable adj. Uneasy or anxious. |
| UNFORGETTABLE | • unforgettable adj. Very difficult or impossible to forget. • UNFORGETTABLE adj. incapable of being forgotten. |
| UNFORGETTABLY | • unforgettably adv. In an unforgettable manner; very memorably. • UNFORGETTABLE adv. incapable of being forgotten. |
| UNPROFITABLE | • unprofitable adj. Not making a profit. • UNPROFITABLE adj. not profitable. |