a 1 t 1 h 4 i 1 r 1 s 1 t 1
7 letters · 10 points in Scrabble
Meaning
adjective (usually followed by `for') extremely desirous
originInherited from Middle English athirst, from Old English ofþyrst, past participle of ofþyrstan (“to smart from thirst”), equivalent to a- (“of”, Etymology 8) + thirst (verb).
Etymology from Wiktionary, CC BY-SA 3.0