14 letters · 24 points in Scrabble
verb travel around, either by plane or ship
originBorrowed from Latin circumnāvigātus, perfect passive participle of circumnāvigō (“sail round something, circumnavigate”), from circum (“about, around”) + nāvigō (“sail, navigate”), from nāvis (“ship”) + agō (“do”). By surface analysis, circum- + navigate.
Etymology from Wiktionary, CC BY-SA 3.0