foul

a.令人厌恶的；脏的

fortune-hunter, fortune-teller, forty, forty-five (also 45), forum, forward, forward-looking, forwarding address, forwarding agent, forwardness, forwent, fossil, fossil fuel, fossil man, fossilization, fossilisation, fossilize, fossilize, fossilise, foster, foster-, fought, foul play, foul-mouthed, foul-up, foully, foulness, found, foundation, foundation course, foundation-stone, foundations, founder, founder-member, founding father, foundling, foundry, fount, fountain, fountain-head, fountain-pen, four,