Exhaustion: extreme weariness Exhaustive: covering all possibilities
Exonerate: 證明無罪 Exorable：可說服的，心軟的
Fortuitous: accidental Fortitude: strength
Forfeit: 喪失 Surfeit：飲食過度
Fomentation：煽動，助長 Fermentation：發酵
Flounder: proceed clumsily Founder: collapse
Fractious: 易怒的，好爭吵的, hard to handle or control Fractional：部分的，碎片的 Factious: 有派性的. Factitious：人爲的，不真實的 Facetious：輕浮的
Fetid: having an offensive smell stinking Fetish: 神物
Fantasy: imaginative fiction Fascinate: be irresistibly attractive
Flush: to pour liquid over or through Fluster: upset
Gouge: 半圓鑿，敲竹槓 Gauche：笨拙的，不會社交的 Gauge：標準尺寸
Gravel：碎石 Grovel：搖尾乞憐的 Gavel：a mallet used for commanding attention Grove: a small wood
Grate: to grind or rub against with a rasping noise Grateful thankful; pleasing Gratify: to afford pleasure to Gratis: without charge or recompense Gratuitous: free charge; unwarranted Gratitude: thankfulness
Gamble: 賭博，投機 Gable：山牆 Gambol：跳躍，嬉戲 Gobble: to swallow or eat greedily
Gall: vex, harass Gulled: deceive Guile: duplicity Guilt: 罪
