| Breton | flapañ | to flap wings |
| Ital.reg. | flapamata, fiapamata | Nightjar, 251, cf. flacamatað6.2.11. |
| Franç. | floppée | volée de coups |
| Engl. | flap | to move upe and down (wings), wave, flop etc.; a state of disorganization, lop, dangle etc. |
| Engl. | flapper | fin; Kestrel, 234 |
| Engl. | flapwing | Swift, 321 |
| Engl. | flop | fiasco, disaster, cf. flivver, hereunder |
| Engl.reg. | flopwing, flapjack | Lapwing, 158 (for lapð11.1.) |
| Engl. | floppy | flaccid, flabby |
| Franç.: VS | flap | mou, dégonflé |
| Ital. | fiàp | soft, flabby |
| Franç. | flapi | abattu |
| Franç.: Gasc. | pliparte | Kestrel, 234 |
| Engl. | flip | see flick, above |
| Engl. | flipper | fin |
| Engl. | flippant | frivolous |
| Engl.(US slang) | flivver | something of inferior quality, trifle; échec (not "an invented word" - Klein) |