How many letters does the top answer for “drained of energy or effectiveness; extremely tired; completely exhausted” have?

The most common answer is fagged (6 letters).

Crossword clue: drained of energy or effectiveness; extremely tired; completely exhausted

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

fagged 6 letters wn-def

drained of energy or effectiveness; extremely tired; completely exhausted

fatigued 8 letters wn-def

drained of energy or effectiveness; extremely tired; completely exhausted