How many letters does the top answer for “a frugal person who limits spending and avoids waste” have?

The most common answer is economiser (10 letters).

Crossword clue: a frugal person who limits spending and avoids waste

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

economiser 10 letters wn-def

a frugal person who limits spending and avoids waste

economizer 10 letters wn-def

a frugal person who limits spending and avoids waste