13 letters · 17 points in Scrabble
adjective defensive against enemy submarines
originEtymology tree Proto-Indo-European *h₂ent- Proto-Indo-European *-s Proto-Indo-European *h₂énts Proto-Indo-European *-i Proto-Indo-European *h₂énti Ancient Greek ᾰ̓ντῐ́ (ăntĭ́) Ancient Greek ἀντι- (anti-)der. English anti- English submarine English antisubmarine From anti- + submarine.
Etymology from Wiktionary, CC BY-SA 3.0