| DIFFUSOR | • diffusor n. Alternative form of diffuser. • DIFFUSOR n. one that diffuses, also DIFFUSER. |
| DISFAVOR | • disfavor n. (American spelling) Alternative form of disfavour. • disfavor v. (American spelling) Alternative form of disfavour. • DISFAVOR v. to regard with disapproval, also DISFAVOUR. |
| DISFORMS | • disforms v. Third-person singular simple present indicative form of disform. • DISFORM v. to alter the form of. |
| DISFROCK | • disfrock v. (Transitive) To remove from status as a member of a clergy; to unfrock. • DISFROCK v. to deprive of clerical garb. |
| DISPROOF | • disproof n. A refutation. • DISPROOF n. the act of disproving. |
| FIBROIDS | • fibroids n. Plural of fibroid. • FIBROID n. a benign tumor, also FIBROMA. |
| FIBROSED | • fibrosed v. Simple past tense and past participle of fibrose. • FIBROSE v. to form fibrous tissue. |
| FIREDOGS | • firedogs n. Plural of firedog. • fire␣dogs n. The metal frame in a fireplace, used to hold the logs, or to support the poker and other tools. • FIREDOG n. a metal support for logs in a fireplace, also ANDIRON, ENDIRON. |
| FIRWOODS | • firwoods n. Plural of firwood. • FIRWOOD n. the wood of the fir tree. |
| FLUORIDS | • fluorids n. Plural of fluorid. • FLUORID n. a compound of fluorine, also FLUORIDE. |
| FOODOIRS | • foodoirs n. Plural of foodoir. • FOODOIR n. a book or blog that combines a personal memoir with a series of recipes. |
| FORESAID | • foresaid adj. (Rare) Aforesaid; aforementioned. • foresaid v. Simple past tense and past participle of foresay. • FORESAY v. to foretell. |
| FORESIDE | • foreside n. The front or fore part of anything; front face of a thing; front side. • foreside n. The outside or external covering. • FORESIDE n. the front side. |
| FOUDRIES | • foudries n. Plural of foudrie. • FOUDRIE n. the jurisdiction of a foud or bailiff in the Orkneys. |
| FRIZADOS | • FRIZADO n. (Spanish) a fine friezelike fabric. |
| OFFSIDER | • offsider n. (Australia, New Zealand, informal) A partner, assistant, or deputy. • OFFSIDER n. (Australian) a bullock-driver's assistant. |