熟語をクリックして意味と例文を表示させてね。

pass ～ off as = to pretend that ～ is something they are not

He escaped by passing himself off as a guard. (oxford)

She passed the poem off as her own. (Merriam-Webster OnLine)

cut across = ～を超えて影響する

oxfordの定義→to affect or be ture for different groups that usually remain separate

▪ Child abuse cuts across all economic and racial lines/boundaries. [=it occurs in all economic and racial groups]

▪ Her academic interests cut across [=involve or relate to] many disciplines.

(共にMerriam-Webster OnLine)

the jury is still out = まだ結論が出ていない

oxfordの定義 → used when you are saying that something is still no certain

The jury is still out on this new policy. (oxford)

strike down = 無効とする　破棄する　（米・法規で）

The board struck down the appointment.
The Supreme Court struck down the law.
(共にMerriam-Webster OnLine)

フツーに「打ち倒す」「病気などで倒れる」の意味もあり。「病気などで倒れる」のときはbe struckと受身で使う。They were struck with terror.彼らは恐怖に震えおののいた。（ジーニアス）

fall flat = 完全に失敗する　冗談がスベる

All of his jokes fell flat. [=no one laughed at his jokes] (Merriam-Webster OnLine)

wind down = a) 緊張がゆるむ、リラックスする　b) 終わりに近づく

a) I intend to wind down with a good book this weekend.

b) The party was winding down.

(共にMerriam-Webster OnLine)

put A off B = AにBへの興味を失わせる　嫌悪感を持たせる

He was out off science by bad teaching. (oxford)

The accident out her off driving for life. (oxford)
目的語には動名詞も使える。

put off には他にも山のように意味あり・・・。取り去る、延期する、待たせる、人との接触を避ける、はぐらかす、乗客を下ろす、麻酔にかける、栓を閉めて止める、turn off、などなど。

get hold of = to have or take somebody/something in your hands

He caught hold of her wrists so she couldn't get away. (oxford)

getの他に catch / grab / take も使える。

acid test = 厳しい試験、厳格な基準

oxfordの定義 = a way of deciding whether sth is successul or true

Whether he would accept a pay cut would be the acid test of his loyalty to the company. (oxford)

The new team faced its first acid test when it played the national champions. (Merriam-Webster OnLine)

bite the bullet = ぐっとこらえる

We need to bite the bullet and make some budget cuts. (Merriam-Webster OnLine)

語源→戦場で手術するとき麻酔がないため弾丸を噛んでいたことから（研究社英和活用大辞典）・・・・・だって。こわい。

rub it in = to keep reminding someone of (something that person would like to forget)

I know I made a mistake, but you don't have to rub it in. (Merriam-Webster OnLine)

I know ～～（←忘れたいイヤなこと）, but you don't have to rub it in. というのがお決まりのフレーズみたい。

be on someone's case = to criticize somebody all the time

She's always on my case about cleaning my room. (oxford)

・Her brother is always on her case about the clothes she wears.
・Get off my case! I'm working as hard as I can!
(共にMerriam-Webster OnLine)

onの代わりにoffを入れれば逆に全然干渉しないという意味に。

walk out = ストライキする　to go on strike

The workers walked out over a wage dispute. (Merriam-Webster OnLine)

to leave somewhere suddenly especially as a way of showing disapproval の意味では、A whole group of angry parents walked out of the meeting. (Merriam-Webster OnLine)みたいにofを使える。

単に「歩いて去る」という意味でなく、「うんざりして」「抗議して」去る、という意味になってしまうらしい。

pull the plug on = 手を引く　見捨てる

Merriam-Webster OnLineの定義 → to allow or cause something to end by stopping the money or support that is needed for it

・At the end of the season, the network is pulling the plug on the show.
・They may pull the plug on the tutoring program.
(共にMerriam-Webster OnLine)

元は栓を抜く、延命維持装置を外す、という意味。

buckle down = 真剣に取り組む

I'd better buckle down to those reports. (oxford)

You had better buckle down if you want to get good grades. (Merriam-Webster OnLine)

buckle up はシートベルトを締めること。

make off with = to steal something and hurry away with it (oxford)

hurry away = 「そそくさと立ち去る」。

Someone had made away with [=made off with] all the money. (Merriam-Webster OnLine)

make away with とほぼ同義。

hold out for = ～を求めて粘る

The union negotiators are holding out for a more generous pay settlement. (oxford)

・The workers are holding out for higher pay.
・The wide receiver is holding out for a new contract.
(共にMerriam-Webster OnLine)

fall out with = ～と不仲になる　けんかする to have an argument

・They fell out [=fought, argued] over money.
・ He had fallen out [=quarreled] with his neighbor.
(共にMerriam-Webster OnLine)

fall out は The cancer treatments made her hair fall out. (Merriam-Webster OnLine)というふうに、髪（や歯）が抜ける、という意味でも使う。

tell off =（人）を しかる　小言を言う

oxfordの定義→ to speak angrily to sb for doing sth wrong

I told the boys off for making so much noise. (oxford)
Did you get told off? (oxford)

SYN は scold

on account of = ～という理由で　because of

・The game was canceled on account of the rain.
・On account of his bad behavior, he will not be allowed to play with the new toy.

(共にMerriam-Webster OnLine)

capitalize on = take advantage of、cash in on、 ～を十分に利用する

The team failed to capitalize on their early lead. (oxford)

They were able to capitalize on our mistakes. (Merriam-Webster OnLine)

onの代わりにuponもあり。

get A across to B = AについてBに理解してもらう、to be communicated or understood

Your meaning didn't really get across. (oxford)

He's not very good at getting his ideas across. (oxford)

give away =
a) to make a present of (something)
b) to allow (something hidden or secret) to become known [=reveal]

a) Our prices are so cheap we're practically giving away everything in our store! (Merriam-Webster OnLine)

b) Please don't give away how the trick is done. (Merriam-Webster OnLine)　She gave away state secrets to the enemy. (oxford)