Words

Arabic
faḥm-, faḥam- - charcoal (Lane 2347)
Arabic
fḫr - to boast, to glory (Lane 2349)
The derivation is not evident
Arabic
faḫūr- - a she-camel great in the udder, but having little milk; a palm-tree great in the trunk, thick in the branches; a house great in the yard and long therein (Lane 2349)
The derivation is not evident
Arabic
faḫḫār- - potter (Lane 2350)
Borrowed from Akkadian paḫāru ‘potter’ through Aramaic.
Arabic
faḫiḏ- - thigh; the smallest subdivision of a tribe (Lane 2349, BK 2 552)
Also faḫḏ-, fiḫḏ-.
Arabic
fakk- - joint connecting the two jaws; part of a mouth comprising both jaws (BK 2 624)
Cf. also fanik- ‘endroit où les deux mâchoires se joignent; endroit de la bouche compris entre la lèvre inférieure et le menton à la naissance de la barbe’ [BK 2 639] (with a secondary -n-?).
Arabic
fkh - to be cheerful, happy, free from straitness (Lane 2432)

Probably compare with Akk. nepelkû, napalkû ‘to be wide’. 

Arabic
fākihat- - fruit (Lane 2433)
Arabic
fkr - to think (Lane 2431)
Arabic
fīl- - elephant (BK 2 655, Lane 2474)