How many letters does the top answer for “in marvel comics, which of the following is not one of the infinity stones” have?

The most common answer is energy (6 letters).

Crossword clue: in marvel comics, which of the following is not one of the infinity stones

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

energy 6 letters otdb

(physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are j