How many letters does the top answer for “feeding on both plants and animals” have?

The most common answer is omnivorous (10 letters).

Crossword clue: feeding on both plants and animals

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

omnivorous 10 letters wn-def

feeding on both plants and animals

(of animals) feeding on plants 75% similar → phytophagous

(of animals and plants) feeding on insects 60% similar → insectivorous