| Germ. | pflume, flume, flaum | downy feather |
| Franç. | flume | (via Germ.) fine feather |
| Franç.: FR | flume | the finest flour (cf. paloma, above) |
| Engl. | flummery | complete nonsense, foolish humbug, French flagornerieð6.2.12. (Welsh llymru is borrowed from Engl.) |
| Engl. | flummoxed | confused ("orig. uncert.") |
| Engl. | flimmer | to shimmer |
| Engl. | flimflam | trick, deception |
| Engl. | flimsy | frivolous, weak (not a metath. of film) |
| Germ.reg. | flimmermaus | bat |
| Lat. | flumen | Ital. fiume (cf. flowð6.2.10.) |
| Alb. | lumë | id. |
| Franç. | lumière | light (see chromatic appendix ð3.1.6.) |
| Czech | plamen | flame |
| Franç. | flamme | ital. fiamma, voir ð3.1.6. |
| Alb. | prafullimë | spark; shines |
| Ital. | fulminare | to make lightings |