a. Obs. rare. [f. ADAMANT + -IVE; or perh. misprinted for adamantine, with turned n (u) as u = v.] = ADAMANTINE.
1599. Ben Jonson, Ev. Man out of Hum., II. iv. 166. My adamantive eyes might head-long hale This iron world to me.
1605. Daniel, Philotas (1717), 374. Th Adamantive Ties of Blood and Nature.
1650[?]. Don Bellianis of Greece, 181. It would have made any Adamantive breast to pitty them.