How many letters does the top answer for “to weaken; to enfeeble. sir w. raleigh.” have?

The most common answer is infirm (6 letters).

Crossword clue: to weaken; to enfeeble. sir w. raleigh.

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

infirm 6 letters web-def

lacking firmness of will or character or purpose

a negotiator. sir w. raleigh. 50% similar → negotiant

an alligator. sir w. raleigh. 50% similar → lagarto

opinionated. sir w. raleigh. 50% similar → opiniaster, opiniatre