1- Fall down
2- Fall over
3- Fall apart
4- Fall about
5- Fall back
6- Fall back on
7- Fall behind
8- Fall for
9- Fall in
10- Fall out
11- Fall Into
12- Fall Through
13- Fall away
14- Fall under
15- Fall upon
16- Fall off
17- Fall on
18- Factor in
19- Factor out
20- Face off
21- Face up to
22- Faff about
23- Faff around
24- Farm out
25- Fart about
26- Fart around
27- Fasten down
28- Fasten on
29- Fasten onto
30- Fasten up
31- Fathom out
32- Fatten up
33- Fawn on
34- Fawn over
35- Feed off
36- Feed on
37- Feed up
38- Feel up
39- Feel up to
40- Fence in
41- Fence off
42- Fend for
43- Fend off
44- Ferret about
45- Ferret around
46- Ferret out
47- Fess up
48- Fess up to
49- Fetch up
50- Fiddle about
51- Fiddle around
52- Fiddle away
53- Fight back
54- Fight it out
55- Fight off
56- Figure on
57- Figure out
58- File away
59- File for
60- Fill in
61- Fill in for
62- Fill in on
63- Fill out
64- Fill up
65- Filter in
66- Filter out
67- Find out
68- Fuck up
69- Fuck off
70- Fuck over
71- Fuck around
72- Finish off
73- Finish up
74- Finish up with
75- Finish with
76- Fink on
77- Fink out
78- Fire away
79- Fire off
80- Fire up
81- Firm up
82- Fish for
83- Fish out
84- Fit in
85- Fit in with
86- Fit into
87- Fit out
88- Fit out with
89- Fit up
90- Fix up
91- Fizzle out
92- Flag down
93- Flag up
94- Flake out
95- Flame out
96- Flame up
97- Flare out
98- Flare up
99- Flash about
100- Flash around
101- Flash back
102- Flash by
103- Flash past
104- Flesh out
105- Flick over
106- Flick through
107- Flip off
108- Flip out
109- Flip through
110- Flip around
111- Float about
112- Float around
113- Flog off
114- Floor it
115- Flounce off/out
116- Fluff out
117- Fluff up
118- Fly about
119- Fly around
120- Fly at
121- Fly by
122- Fly into
123- Fob off
124- Fob off on
125- Fob off onto
126- Fob off with
127- Focus on
128- Fold up
129- Follow on
130- Follow on from
131- Follow through
132- Follow up
133- Fool about
134- Fool around
135- Fool with
136- Forge ahead
137- Fork out
138- Fork over
139- Freak out
140- Free up
141- Freeze out
142- Freeze over
143- Freeze up
144- Freshen up
145- Frighten away
146- Frighten off
147- Fritter away
148- Front for
149- Front off
150- Front onto
151- Front out
152- Front up
153- Frown on
154- Fuel up