Entry 3 senses · 3 variants Webster, 1913 Tantivy · Tan·tiv·y · IPA /tænˈtɪvi/ adv. n. v. i. 01 adv. Swiftly; speedily; rapidly; -- a fox-hunting term; as, to ride tantivy. 1. Swiftly; speedily; rapidly; -- a fox-hunting term; as, to ride tantivy. 02 n. A rapid, violent gallop; an impetuous rush. 1. A rapid, violent gallop; an impetuous rush. 03 v. i. To go away in haste. 1. To go away in haste.[Colloq.]