How many letters does the top answer for “to bring into a state of mesmeric sleep.” have?

The most common answer is mesmerize (9 letters).

Crossword clue: to bring into a state of mesmeric sleep.

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

mesmerize 9 letters web-def

attract strongly, as if with a magnet

on in a state of magnetic or mesmeric sleep. 60% similar → sleepwaker