PHRASAL: to back away (non-separable)
MEANING: to retreat
EXAMPLE: The people backed away as the robber came into the bank.

PHRASAL: to back down (non-separable)
MEANING: to not follow a threat
EXAMPLE: Terry backed down when he saw that the bear was much bigger than he was.

PHRASAL: to back off (non-separable)
MEANING: to retreat; not follow a threat
EXAMPLE: That car was following me closely, but finally it backed off.

PHRASAL: to back off (non-separable)
MEANING: to move in reverse; move backwards
EXAMPLE: You are crowding me. Please back up a few steps.

PHRASAL: to back up (separable)
MEANING: to drive a vehicle in reverse; move backwards
EXAMPLE: She backed the car up to the garage door.

PHRASAL: to back up (separable)
MEANING: to make a protection copy
EXAMPLE: Don't forget to back up your important computer files.

PHRASAL: to back up (separable)
MEANING: to confirm facts; support
EXAMPLE: Frank backed Mary's story up. He told us the same facts that Mary told us.

PHRASAL: to beat up (separable)
MEANING: to hurt someone by hitting and/or kicking them repeatedly
EXAMPLE: The men in the pub were trying to beat each other up. It was a terrible fight!

PHRASAL: to beg off (non-separable)
MEANING: to ask to be excused from something
EXAMPLE: My friends were supposed to come over for dinner, but they begged off.

PHRASAL: to bend over (non-separable)
MEANING: to bend at the waist
EXAMPLE: Sam hurt his back when he bent over to pick up his shoes.

PHRASAL: to blend in with (non-separable)
MEANING: to match the surroundings
EXAMPLE: New immigrants often try to blend in with the citizens of a country.

PHRASAL: to blow up (separable)
MEANING: to explode; destroy with an explosion
EXAMPLE: The bomb blew up and hurt one person.

PHRASAL: to blow up (non-separable)
MEANING: to explode with anger; suddenly become very angry
EXAMPLE: Maxine blew up when I told her I lost her new CD.

PHRASAL: to blow up (separable)
MEANING: to inflate something
EXAMPLE: The clown blew up the balloons.
               The clown blew the balloons up.
               He blew them up.

PHRASAL: to bone up on (non-separable)
MEANING: to study something completely for a short time; refresh one's memory with information
EXAMPLE: Nick's study group boned up on prepositions before the test.

PHRASAL: to boss around (separable)
MEANING: to tell someone what to do repeatedly
EXAMPLE: I hate when my sister tries to boss me around!

PHRASAL: to break down (non-separable)
MEANING: to lose control of one's emotions
EXAMPLE: Brent broke down in tears when he heard that his wife had been saved from the fire.

PHRASAL: to break down (separable)
MEANING: to dismantle, destroy
EXAMPLE: The robbers broke the door down when they came in last night.

PHRASAL: to break down (separable)
MEANING: to separate something into its component parts
EXAMPLE: The production costs were very high. When we broke the costs down, we spent more on marketing than on the actual product.

PHRASAL: to break down (non-separable)
MEANING: to stop working (for machines)
EXAMPLE: Sara's car broke down yesterday.

PHRASAL: to break in (separable)
MEANING: to work something so as to be usable;wear something new until it is comfortable
EXAMPLE: My shoes hurt my feet because they haven't been broken in yet.

PHRASAL: to break in (non-separable)
MEANING: to train; get accustomed to a new routine.
EXAMPLE: One of the manager's duties is to break the new employees in.

PHRASAL: to break into (non-separable)
MEANING: to enter forcefully or abruptly
EXAMPLE: Cory broke into a house and stole a TV. Now, he's in jail!

PHRASAL: to break off (separable)
MEANING: to end a relationship
EXAMPLE: Alex and I broke off our engagement. We're not going to get married.

PHRASAL: to break off (separable)
MEANING: to end a conversation
EXAMPLE: The manager broke off our conversation when the phone rang.

PHRASAL: to break up (non-separable)
MEANING: to separate something; scatter, disperse
EXAMPLE: What time did the football game break up last night?
EXAMPLE: The police broke the fight up.

PHRASAL: to break up (non-separable)
MEANING: to end a relationship
EXAMPLE: Peter and June broke up yesterday.

PHRASAL: to break up with (non-separable)
MEANING: to end a relationship
EXAMPLE: Peter and June broke up with each other yesterday.

PHRASAL: to bring back (separable)
MEANING: to return something
EXAMPLE: My homework is due tomorrow. Will you please bring my book back today?

PHRASAL: to bring off (separable)
MEANING: to accomplish something difficult; do the impossible or unlikely
EXAMPLE: Nobody thought Cari could get an A in that class, but she brought it off!

PHRASAL: to bring up (separable)
MEANING: to mention
EXAMPLE: No one brought up the subject of employee raises at the meeting.

PHRASAL: to bring up (separable)
MEANING: to raise; rear
EXAMPLE: I was brought up with very strict rules. I had to be a good child, or I was punished.

PHRASAL: to brush up on (non-separable)
MEANING: to practice, to improve your skill or knowledge
EXAMPLE: Nick's study group brushed up on pronouns before the test.

PHRASAL: to burn down (separable)
MEANING: to destroy by fire
               (Note: For standing things--trees, buildings, etc.--only.)
EXAMPLE: If you smoke in bed, you may burn the house down.

PHRASAL: to burn up (separable)
MEANING: to destroy by fire
               (Note: For non-standing things & people only.)
EXAMPLE: All of their pictures burned up in the fire.

PHRASAL: to burn up (separable)
MEANING: to cause someone to become very angry
EXAMPLE: That rude woman really burned me up! Arrgh!!!

PHRASAL: to butt into (non-separable)
MEANING: to enter a conversation uninvited; impolitely interrupt
EXAMPLE: That rude man butted into our conversation.

PHRASAL: to butt in (non-separable)
MEANING: to enter uninvited; to interrupt
EXAMPLE: The impatient women butted in the line at the market.

PHRASAL: to butt out (non-separable)
MEANING: to tell someone to mind their own business.
EXAMPLE: Butt out! This is none of your business!

PHRASAL: to butter up (separable)
MEANING: to praise someone excessively with the hope of getting some benefit
EXAMPLE: I guess Marilyn really wants to be promoted. She's been buttering her supervisor up all week.