There are 100 words hidden in the letters of FOREIGN, from 14 two-letter words up to FOREIGN (7 letters). For points, FOREIGN is best at 11.
No other single word uses all 7 letters of FOREIGN. FOREIGN has 7 letters: 3 vowels and 4 consonants, worth 11 points before any board bonuses.
7-letter words 1
6-letter words 5
5-letter words 17
feign9finer8fogie9forge9genro6giron6gofer9gonef9goner6gonif9grief9groin6infer8irone5negro6reign6renig6
4-letter words 29
ergo5fern7fine7fino7fire7firn7foin7fore7frig8froe7frog8gien5girn5giro5goer5gone5gore5grin5info7inro4iron4neif7noir4nori4ogre5reif7rein4rife7ring5
3-letter words 34
ego4eng4eon3erg4ern3fen6fer6fie6fig7fin6fir6foe6fog7fon6for6fro6gen4gie4gin4gor4gre4ion3ire3nog4nor3one3ore3ref6reg4rei3rif6rig4rin3roe3
2-letter words 14
ef5en2er2go3if5in2ne2no2oe2of5oi2on2or2re2
Words are from our open word list and include some game-only words. Rude words are left out of this page; the unscrambler shows every valid word, lets you add blank tiles and filter by length.