Fall apart: Break into pieces: The box FELL APART when I picked it up.
Fall for:Be attracted to somebody, fall in love: He FELL FOR her the moment their eyes met.
Fasten on: Give attention to something that confirms your beliefs: They have FASTENED ON the speech as a source of inspiration.
Fiddle about:Waste time doing silly things, or doing things unsuccessfully: We spent the whole afternoon FIDDLING ABOUT with the computer but couldn’t get it to work.
Fight back:Defend yourself, resist an attack: The army attacked the town and the inhabitants FOUGHT BACK fiercely.
Figure on: Plan, expect: What job do you FIGURE ON doing when you graduate?
File for: Apply for something legally, like divorce or bankruptcy: They FILED FOR divorce after two years of marriage.
Filter out: Remove something unwanted: It FILTERS OUT all the impurities and chemicals in tap water so that it tastes better.
Find out: Discover: I went to the library to FIND OUT all I could about the life and work of Joe Meek.
Focus on: Concentrate: The report FOCUSES ON the company’s weak points.
Forge ahead: Make a lot of progress in a short time: We’ve been FORGING AHEAD with the work and should be finished well before the deadline.
Freshen up: Wash quickly and improve appearance: I’m going to the bathroom to FRESHEN UP before they arrive.
Frighten off: Scare someone so much that they go away: The dog FRIGHTENED the burglars OFF.
Fuel up: Put petrol or other fuel into a vehicle: We stopped to FUEL UP before the car ran out.
