10 letters · 13 points in Scrabble
verb make weak
originFrom debilitatus, the past passive participle of Latin dēbilitō (“to weaken, debilitate”), from the adjective dēbilis (“weak”), itself from de- + habilis (“able”). Equivalent to Latin dēbilitō + -ate (verb-forming suffix; adjective-forming suffix).
Etymology from Wiktionary, CC BY-SA 3.0