to let up: to slacken, to lessen in intensity; to relax or ease one’s effort (also: related idiom: to take it easy) Examples of TO LET UP When Evie is working, she never lets up for a moment. Despite recent storms, the pain is not expected to let up anytime soon.

in vain: useless, without the desired result Examples of IN VAIN The last-minute get-out-the-vote effort was in vain, because the opposition candidate still lost. The director didn’t even see me, so all the rehearsing I did was in vain.

to wear out: to use something until it has no value or worth anymore, tomake useless through wear Examples of TO WEAR OUT I was the first one to leave the party, because I didn’t want to wear out my welcome. I had to have my shoes fixed; the hike caused me to wear out…

to wait on: to serve in a store or restaurant Examples of WAIT ON You should arrive on time, because the job interviewer won’t want to wait on you. The hockey players had to wait on the last game to end before they could start.

to dress up: to wear formal clothes, to dress very nicely Examples of DRESS UP There are whole websites full of people who like to dress up their cats and dogs. On casual Fridays, we don’t need to dress up at my office.

to throw out: to discard; to remove by force; to refuse to consider, to reject Examples of TO THROW OUT – Instead of throwing out our paper waste in the office, we should recycle it.– When a fight broke out between two people on the dance floor, the management threw them out.