English Vocabulary

back up (to support someone) I’ll back you up throughout the court case.   (to prove that what someone is saying is true) Recent study backs up her claims.   (to make a copy of computer information) Make sure you back up your files every day.   (to move backward) …

back out (to refuse to do something that you had promised to do) Lily made a promise, and she can’t back out of it now. The investor backed out of the deal at the last minute.   – English Vocabulary

back off (to move backward) He saw the knife and backed off.   (to stop bothering someone) Back off, Benjamin! Let me run my own life!   (to not do something that you had agreed to do) Lucas backed off when he realized how much work was involved. – English …

back down (give up a claim; stop arguing for something) The battle seems to continue because neither side is willing to back down. All workers demand a pay increase, and they refuse to back down so far.   – English Vocabulary

bull market (a time when share prices are rising) The investors rake in more and more money during the bull market. They are waiting for this bull market to end.     – English Vocabulary