How many letters does the top answer for “unquietness; restlessness. sir w. temple.” have?

The most common answer is intranquillity (14 letters).

Crossword clue: unquietness; restlessness. sir w. temple.

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

intranquillity 14 letters web-def

Unquietness; restlessness. Sir W. Temple.

a recital. sir w. temple. 50% similar → recite

impartiality. sir w. temple. 50% similar → impartialness

to dispirit. sir w. temple. 50% similar → unspirit