in-strēnuus, a, um, adj., not brisk, inactive, sluggish, spiritless (poet. and in post-Aug. prose): homo, Plaut. Most. 1, 2, 23: animus, Ter. Heaut. 1, 1, 68: dux, Suet. Vesp. 4.

— Adv.: instrēnuē, without spirit: non instrenue moriens, Just. 17, 2, 1.