Dictionary Definition:
Asaŋhīra (adj.) [= asaŋhāriya of saŋ + hṛ] immovable, unconquerable, irrefutable Vin ii.96; S i.193; A iv.141; v.71; Sn 1149 (as Ep. of Nibbāna, cp. Nd2 110); J i. 62; iv.283 (˚citta unfaltering); Dpvs iv.12.