upa-√ das P. -dasyati (Subj. -dasat, [RV. i, 139, 5]; [AV. v, 30, 15]) to fail, be wanting, be extinguished or exhausted, dry up, [RV.]; [AV. iii, 29, 2], [6]; [v, 30, 15]; [TS. i, 6, 3, 3]; [ŚBr.]; [TāṇḍyaBr.]; [GopBr.]; [Kauś.]; to want, lose, be deprived of (instr.), [AV. xii, 4, 2] : Caus. -dāsayati, to cause to fail or cease, extinguish, [AV. xii, 5, 27]; [52]; [TBr.]; [Nir.]