The origin is uncertain. Cf. perhaps Arb. ˁqr (V) ‘to be accumulated (fat on an animal); to grow well (plants)’, Tna. ˁaḳärä ‘to save, to put in reserve; to hoard, to amass, to accumulate’, Amh. aḳḳwärä ‘to collect’. (Kogan 2015:548-549) also a verbal noun traceable to Proto-MSA: *ˁaḳar- ‘growth’, cf. Mhr. ˀāḳər ‘size’ (ML 20), Jib. ˁáḳər ‘size’ (JL 11), Soq. ˁáḳar ‘size, age’ (LS 325).