Relating to or characterized by rapid galloping; moving very fast and energetically.
From gallop plus the adjectival suffix -tious (from Latin -tiosus), following a pattern similar to 'pretentious' or 'ambitious,' meaning 'having the quality of galloping.'
This word is actually quite rare—even most dictionaries skip it—but Victorian literature loved using -tious words to make ordinary actions sound more dramatic and impressive.
Complete word intelligence in one call. Free tier — 50 lookups/day.