こんな時英語でどう言うの〜？英会話辞典 ：　

「せ」

〜製　：　Made in ...(国名)　　
精一杯　：　The best one can do.   
正確に言うと　：　To be exact.   
整形する　：　Have plastic surgery.  Get a (face lift, nose job, etc.).  
正々堂々と闘う　：　Play fair.  
ぜいたくだね〜　：　It's a luxury.　  
ぜいたく言うな　：　Don't ask for too much.  
ぜい肉　：　Fat.   Extra weight.  A spare tire.  
〜のせいにする　：　It's someone's fault.  Blame someone.  
正反対に　：　Just the opposite.  
せかさないで　：　Don't rush me.  
責任感が強い　：　A strong sense of responsibility.  
咳払いをする　：　Clear one's throat.  
(少し)席をはずしてください　：　Leave us for a minute please.  
世間知らず　：　Naive.  Ignorant of the real world.  
世間体を繕う　：　Keep up appearances.  
世間に明るい　：　Worldly wise.  
世間は狭い　：　It's a small world.  
世間話　：　Small talk.  Chit-chat.  
せこい　：　How pretty !  
せちがらい　：　Cruel.   Hard.  
せっかく〜をしたから　：　Since you took the trouble to do something.  
せっかち　：　Impatient.  Hasty.  
絶交する　：　Cut off all relations with someone.  
絶好調　：　In top form.  On a roll.  
接待する　：　Entertain.  
絶体絶命　：　Up against the wall.  In a bind.  In a pinch (for money).  
絶対大丈夫　：　Completely okey.  
絶対に　：　Absolutely.  
説得力のある　：　Convincing.  
絶望的　：　It's hopeless.  
絶望的になる　：　Looks hopeless.  This is a desperate situation !  
ぜひ　：　By all means.  
ぜひにとおっしゃるなら　：　If you insist.  
せびる　：　Put the squeeze on someone (for money).  
世論　：　Public opinion.  
せわしない　：　Restless.   Hectic.  
世話好き　：　Enjoy helping others.  
世話女房　：　The doting housewife.  
お世話になりました　：　Thanks for all your help.  
お世話様　：　Thanks for your patronage.  
大きなお世話　：　Mind your own business !  
詮索好き　：　A nosy person.  A nosy Parker.  
全然〜ない　：　Completely not ....   
選択の余地なし　：　There's no choice.  Can't get out of it.  
先入観　：　Preconception.  Bias.  
洗脳　：　Brainwashing.  
全部で　：　In total.  
餞別　：　A farewell gift.  A going away party.  
   

　

このコーナーは「講談社文庫」の「こんな時どう言う英会話辞典」（長村キット著）
から抜粋させて頂きました。
この本には役に立つフレーズが満載です。読み物としても面白いですよ〜！