How many letters does the top answer for “to alter; to make different; to vary.” have?

The most common answer is variate (7 letters).

Crossword clue: to alter; to make different; to vary.

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

variate 7 letters web-def

a variable quantity that is random