How many letters does the top answer for “standing for something else” have?

The most common answer is representative (14 letters).

Crossword clue: standing for something else

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

representative 14 letters wn-def

a person who represents others

not standing for something else 75% similar → nonrepresentative

placed on or over something else 50% similar → overlying

to annex with something else. 50% similar → coannex