Lewis & Short

mīrĭmŏdīs, adv. [mirus-modus; cf. multimodis; v. Lorenz ad Plaut. Most. 3, 2, 98], in an astonishing manner: nimium mirimodis mirabilis, Plaut. Trin. 4, 2, 86; Claud. Mam. Stat. Anim. 3, 12.