flunkey (also flunky)

n (pl ~s or -kies) (infml derog 口, 贬) 1 servant in uniform （著制服的）男仆. 2 (esp US) person who does small unimportant tasks 打杂的人.

Flt Lt, flu, fluctuate, fluctuating, fluctuation, flue, fluency, fluent, fluently, fluff, fluffiness, fluffy, fluid, fluid ounce (abbr 缩写 fl oz), fluidity, fluke, fluky (also flukey), flummox, flung, flunk, fluoresce, fluorescence, fluorescent, fluorescent lamp, fluoridate, fluoridation, fluoride, fluoridization, fluoridisation, fluoridize, fluridise, fluorine, flurry, flush, flushed, fluster, flute, flutist, flutter, fluvial, flux, fly,