opama 1 · opama 2
Opama at Ja I 89 and Saddh 93 (anopama) stands for ūpama, which metri causā for upama.
(adj, adj, in comps, from upameti) similar to; like [lit.] measuring near Construction: upa > opa + √mā + *a
(nt, nt, in comps, from upameti) simile; metaphor [lit.] measuring near Construction: upa > opa + √mā + *a