Phrasal verbs are an important feature of the English language. The meaning of a phrasal verb often bears no relation to the meaning of either the verb or the particle which is used with it. Many phrasal verbs have several different meanings.
Wait behind (to stay in a place after all the other people have left)
The principal ordered us to wait behind after school.
Wait in (to stay at home expecting someone)
They had to wait in all day for the electrician.
Wait on (to bring someone everything they want)
The old planter wanted a maid to wait on him.
Wait out (to wait until something unpleasant has ended)
The judge will take a long time to pronounce the judgment but I am going to wait it out.
Wait up (to stay awake because you are expecting someone to arrive)
I will be coming late so don’t wait up for me.
Wake up (to become conscious after sleeping)
Mother woke me up as usual.
Walk away (to stop being involved in a situation that is difficult to deal with)
Are you going to walk away from a long relationship?
Walk in on (to go into a room and see what someone is doing)
She walked in on me as I was getting ready.
Walk into (to get a job very easily)
After earning a degree in English he walked into a well-paid job.
Walk off (to leave a place because you are angry)
We walked off in protest at factory conditions.
Walk off with (to win a prize very easily)
She walked off with the most sought after title.
Walk out (to leave a meeting before it has ended)
Some of the invitees walked out during the chief guest’s speech.
Wall up (to fill a space in a building with bricks)
Some of the windows of the old building had been walled up.
Wallow in (to remain in an unhappy emotional state without trying to get out)
After a few years of wallowing in misery she decided to look for another job.
Waltz off with (to take something without the owner’s permission)
The stranger has waltzed off with my briefcase.
Wander off (to leave a group of people without telling them)
One of the pilgrims has wandered off.
Ward off (to stop yourself from getting an illness)
She takes vitamin C tablets to ward off colds.
Warm to (to become more enthusiastic about an idea)
At first she did not want to move into another house, but she is now warming up to the idea.
Warm up (to become warmer)
A hot cup of coffee will warm you up.
Warn away (to warn a person not to come near a place because it is dangerous)
Flashing red lights warn boats away from the rocks.
Warn off (to warn someone not to do something)
Signs have been put up near the river to warn off swimmers.
Wash away (if water washes something away, it carries it away)
Floods have washed the old building away.
Wash down (to drink something while you are eating)
He took a gulp of ginger beer to wash the food down.
Wash out (to clean the inside of a container with a liquid)
She washed the pan out with soap.
Wash over (if a feeling or emotion washes over you, you suddenly feel it strongly)
A sense of despair washed over her.
Waste away (to get thinner gradually usually because of illness)
I simply cannot watch him waste away like that.