| Engl. | fuck | Lat. futuere (above) |
| ON | fjuka | to be tossed by the wind |
| ON | fjuk | snowstorm |
| Ital. | fiocca | (Germ. influx) snow (storm) |
| Gael.I. | pocaire-gaoithe | (f>p) Kestrel, 234 |
| Engl. | poke | to prod, thrust |
| Ital.: I. Ventotene | puchicola | White Wagtail, 313 |
| Franç.: Norm., Québec | fouquet | Common Tern, 97 (bouncing flight) |
| Franç. | fouquet | (Ile Maurice, Réunion) petrels |
| Franç.rég. | fouquet | squirrel: agile animal |
| Roman. | fóic | leaf, French "frétillon"; Wren, 406 |
| Roman. | foaie | acte sexuel, cf. fuck above |
| Roman. | foi | to swarm |
| Anc.Greek | phykos | marine alga: always in motion, cf. Port. sargaçoð6.3.10. |
| Engl. | fickle | inconstant |
| Engl.(o.liter.) | fiken | fidgetð6.2.25. |
| Ital. | ficcare | to pitch, drive, thrust in, French ficher |
| Germ. | fackeln | to sway, blaze, etc. |
| Lat. | facere | to do, make |