How many letters does the top answer for “incapable of being mastered or subdued. sir t. browne.” have?

The most common answer is unmasterable (12 letters).

Crossword clue: incapable of being mastered or subdued. sir t. browne.

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

unmasterable 12 letters web-def

Incapable of being mastered or subdued. [Obs.] Sir T. Browne.

incapable of being exhaled. sir t. browne. 63% similar → inexhalable

being under the feet. sir t. browne. 50% similar → suppedaneous