to become less in amount or lower in level
fall out (1)
If something falls out, it becomes detached from whatever it's attached to.
Fall out (2) INFORMAL
If you and a friend fall out, you are no longer friendly because of a disagreement or a problem you've had.
Fall over
If someone falls over, they fall to the ground.
Fall through
If a plan or a deal falls through, it doesn't work out and it's dropped or scrapped.
Farm out
If you farm out work, you pay people outside your company to do it.
Feel for
If you feel for someone, you have sympathy for them or feel sad because they are suffering.
Fight back
If you fight back, you do what's needed to win a conflict or a battle after being attacked or threatened.
Fight off
to try to stop someone or something from attacking you or hurting you
figure out (1)
If you figure something out, you find the solution to a problem or the answer to a question.
figure out (2)
If you figure somebody out, you know what they're like and how they're likely to act.
fill in (1)
If you fill in a form, you complete it by writing in the spaces provided.
fill in (2)
If you fill somebody in, you give them the details about something.
Fill out
If you fill out a form, you complete it by writing in the spaces provided.
fill up (1)
If you fill something up, you make it full.
fill up (2)
to fill someone's stomach with food
Find out
to discover a fact or information about something
Finish off
to complete something, or to eat the last piece of something
Finish up
to be in a certain place or situation after a long series of events or a long time
Finish with
If you've finished with something, you've done what you needed to do with it and you no longer need it.
Fire up
to create enthusiasm or excitement, usually among a group of people or a crowd
fit in (1)
to have enough space for something, or to have enough time for something
fit in (2)
If you fit in, you are accepted by a group of people and seen as "one of them".
Fit together
to connect pieces that go together to make something
fix up (1)
to repair something or to improve the condition of something, especially something old or second-hand
Fix up (2) INFORMAL
to arrange something for someone
Fizzle out
If something fizzles out, it slowly loses its power or strength, and then ends weakly.
Flare up
If something like a conflict or an illness flares up, it suddenly becomes worse.
Flick through
If you flick through a book or a magazine, you have a quick look at a few of the pages.
Flood in
If things flood in, they come quickly and in great numbers.
