fit: stresses adaptability and sometimes special readiness for use or action: the vessel is now ~ for service.


suitable: implies an answering to a need or requirement: clothes ~ for camping.  (answer基本意思是satisfy满足，如满足提问或要求或需求, to answer a question回答问题)


meet: suggests a rightness or just proportioning and suitability: a tip that was ~ for the service rendered.


proper: suggests a suitability through essential nature or accordance with custom: the ~ role of the First Lady.


appropriate: implies eminent or distinctive fitness: a golf bag is a ~ birthday gift for a golfer.


fitting: implies harmony of mode or tune or purpose: ~ subjects for dinner table conversation.


apt: connotes a fitness marked by nicety and discrimination: a speech laced with some ~ quotations. (lace: 1网眼织物蕾丝 2加入夹杂酒药语言等Fred liked to lace his conversation with military terms弗雷德喜欢说话时加入军事术语)


happy: suggests what is effectively or successfully appropriate: a ~ choice of words.


felicitous: suggests an aptness that is opportune, telling or graceful: a ~ note of apology.


fit合适: 能适应能使用，suitable合适: 能满足需求要求，meet恰好: 刚好(right,just suitability)的合适，proper合适: 符合本质属性和传统，appropriate很合适: 显著特别的合适(eminent突出distinctive独特特别)，fitting合适: 形容方式曲调目标等的和谐，apt贴切: 经过精准鉴别，happy有效成功: 有效成功的合适，felicitous也是贴切: 适时显著优雅的贴切。


记忆方法：1） 首字母FSMPAFAHF重组成MASs HAPpy FFF，mass是群众平民，F想成方法，群众幸福<==三种合适的方法 (有人说是立德立功立言，就是做人做事做学问)。


          2）合适的意思是适用于目标需要用途情况mean right with respect to some end, need, use, or circumstance.