foul-up

n (infml 口) spoiling or upsetting of arrangements, relationships, etc （安排、 关系等的）混乱, 差错: We'll finish the project on time if there are no more foul-ups. 只要不再出差错, 我们就能按时完成计画.

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, foul play, foul-mouthed, foully, foulness, found, foundation, foundation course, foundation-stone, foundations, founder, founder-member, founding father, foundling, foundry, fount, fountain, fountain-head, fountain-pen, four, four-, four-in-hand, four-letter word,