adverb = ati + iva, orig. “much-like” like an excess = excessive-ly. There are three forms of this expression, viz.

1. ati + iva in contraction atīva (q.v.)
2. ati + iva with epenthetic r: atiriva DN.ii.264 (variant reading SS. atīva); Snp.679, Snp.680, Snp.683; Snp-a.486.
3. ati + viya (the doublet of iva) = ativiya Ja.i.61, Ja.i.263; Dhp-a.ii.71 (a. upakāra of great service); Pv-a.22, Pv-a.56, Pv-a.139.

Sk. atīva