| Word | Scrabble | WWF |
|---|---|---|
| IFF (3) TWLCollinsWWF conjunction: If and only if; used to show that the truth values of two statements are the same. [def] | 9 I (1) + F (4) + F (4) | 9 |
| IF (2) TWLCollinsWWF noun: An uncertainty, possibility, condition, doubt etc. [def] | 5 I (1) + F (4) | 5 |