How many letters does the top answer for “performed comprehensively and completely; not superficial or partial” have?

The most common answer is exhaustive (10 letters).

Crossword clue: performed comprehensively and completely; not superficial or partial

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

exhaustive 10 letters wn-def

performed comprehensively and completely; not superficial or partial

thoroughgoing 13 letters wn-def

performed comprehensively and completely; not superficial or partial