Soqotri

gédaḥ - to come (LS 102; CSOL I 542, 461; Naumkin et al. 2015a:68)

Proto-MSA
*gdḥ - to come, to drift ashore (Kogan 2015: 553)
The origin is uncertain. Clearly related is Arb. miǯdaḥ- ‘seashore’, but one may doubt that this extremely rare and isolated word is autochtonous in Arabic (Kogan 2015: 553)