Rev up To increase the speed, activity, or excitement level of something. The coach's speech revved up the team before the game. The engine revved up as he pressed the accelerator.

Peter out To gradually become smaller, weaker, or less important until it ends or disappears. The crowd's enthusiasm petered out as the game dragged on. The conversation eventually petered out and they sat in silence.

Whittle down To gradually reduce the size or number of something. The committee managed to whittle down the list of candidates to just three. They've been trying to whittle down their debt over the years.

Suit up To put on a uniform or special clothing for an activity or job. The players suit up before every game. Firefighters need to suit up quickly when they get a call.

Mill around/about To move around aimlessly or without any particular purpose. People were milling around the lobby, waiting for the show to start. The students milled around the hall before the assembly. The tourists milled about the market, taking in the sights and sounds.

Happen upon/on To find or encounter something or someone by chance. We happened upon a charming little café while walking through the city. She happened on an old friend at the market.

Slurp up To eat or drink something with a loud sucking noise. The kids slurped up their soup noisily. He slurped up the last of his milkshake.

Beset with/by To be troubled or threatened persistently by something. The project was beset with delays and difficulties. They were beset by financial problems.

Cavort with To jump or dance around excitedly with someone. The children cavorted with each other in the playground. They cavorted with their friends at the party.

Scrunch down To crouch or squeeze into a small or cramped position. She scrunched down in her seat to avoid being seen. They scrunched down behind the sofa to hide. The soldier scrunched down in the trench to avoid enemy fire.

Rear up To rise up or stand on the hind legs, especially for animals, or to appear suddenly in a threatening manner. It can also mean to become angry or rebellious. The horse reared up in fright. A huge wave reared up before crashing onto the shore. The workers began to rear up after they were denied a raise.

Vibe out To relax and enjoy the atmosphere or music. They just wanted to vibe out to some good tunes after a long day. We spent the evening vibing out at the beach.

Segue into To smoothly transition from one state, condition, or topic to another. The conversation segued into a discussion about travel plans. The music segued into a slower, more mellow tune.

Trip up To stumble or lose your balance, to make a mistake, or to cause someone to make a mistake. The tricky question tripped up many of the contestants. He was careful not to trip up during his presentation. She tripped up on the uneven sidewalk.

Glow up To experience a noticeable and positive transformation, often related to physical appearance. She used to dress very plainly, but after some fashion advice from friends, she’s glowed up and now always looks chic and stylish.

Nick up To cause small cuts, nicks, or minor damage to a surface. He nicked up the table with his keys.

Bug out 1/ To leave quickly.
2/ To react with surprise or alarm.
3/ To widen one's eyes in surprise or fear. When the storm hit, we had to bug out and find shelter. He really bugged out when he saw the size of the spider. Her eyes bugged out when she saw the surprise party.

Spell out To explain something in detail or very clearly. The contract spelled out all the terms and conditions. She had to spell out the instructions for him because he didn't understand.

See to To take responsibility for or to deal with something. He promised to see to the arrangements for the meeting. Can you see to it that everyone gets a copy of the report?

Tamp down To suppress, reduce, or minimize something, such as emotions, rumors, or problems. The government took measures to tamp down inflation. The company tried to tamp down the rumors about its financial difficulties. The spokesperson worked hard to tamp down the public's concerns about the new policy. The team tried to tamp down their excitement until the project was officially approved.

Gag for/to^British To strongly desire or crave something. After a long day at work, she was gagging for a cup of tea. He was gagging for a chance to prove himself in the new role. She's gagging to go on vacation after months of hard work.