Words

Arabic
ftḥ - to open (Lane 2327)
Arabic
fatḫat- - a ring without a stone (Lane 2330)

Probably related. Assumed original meaning: ‘something pierced, bored through’.

Arabic
ftl - to twist (Lane 2333)
Arabic
ftn - to test, to try (Lane 2334)
Arabic
fitān- - a covering of leather for the camel's saddle (Lane 2336)
Arabic
ftq - to slit, to rent asunder, to disjoin (Lane 2331)
Arabic
fṯṯ - VII. to become broken (Lane 2337)
Arabic
fṭr - to cleave, to split; to begin, to originate (trans.) (Lane 2415)
Arabic
fuṭr- - mushroom (Lane 2416)
Arabic
fūṭat- - cloths that are brought from Es-Sind, thick, or coarse, and short, used as waist-wrappers (Lane 2459)