Notes :Burrow & Emeneau suggest relationship with *ari 'tax', but this is hardly possible, as the resulting derivative would rather mean 'to tax smb., make one pay'. I would rather view these items as a peculiar semantic shift from *ar- 'rare, scarce' (cf. Tam. arukku 'to make scarce, reduce', possibly > 'to bargain, be miserly'?).