Ugaritic

ˀadr - wonderful, magnificent, strong, of good quality (DUL 20)

PC
*ˀdr - to be great, strong, magnificent (Kogan 2015: 280)
Cf. perhaps Tna. ˀaddärä ‘to heap up, to amass, to collect’ (TED 1530), which would point to PWS *ˀdr ‘to be massive.’ In DRS 10, PC *ˀdr is compared to Arb. ˀudrat- ‘scrotal hernia’