The origin is uncertain. Cf. perhaps Arb. ˁqr (V) 'to be accumulated (fat on an animal); to grow well (plants)' (TA 13 114), Tna. ˁaḳärä 'to save, to put in reserve; to hoard, to amass, to accumulate' (TED 1866), Amh. aḳḳwärä 'to collect' (AED 1185). (Kogan 2015:548-549)
"Proto-MSA *ˁamal- must be identical to Arb. ˁamal- 'work, labor' (Lane 2158). In Classical Arabic this term does not seem to display any agricultural meaning which is, however, well attested in the Arabic dialects of Southern Arabia." (Kogan 2015:549)
"Proto-MSA *ˁmr 'to say' has been identified by Leslau with Hbr. ˀmr with the same meaning and its CS cognates, but the presence of *ˁ in the proto-form makes this equation rather problematic." (Kogan 2015:544)
The etymology is unknown.
"The etymology of Proto-MSA *ˁar 'but' is uncertain. A cognate relationship with Arb. γayr- (Lane 2315) is rather attractive, but ˁ instead of γ is hard to explain". (Kogan 2015:549)
Quoted under No. 45 as a variant root.