How many letters does the top answer for “marked by disregard for critical standards or procedures” have?

The most common answer is noncritical (11 letters).

Crossword clue: marked by disregard for critical standards or procedures

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

noncritical 11 letters wn-def

marked by disregard for critical standards or procedures

uncritical 10 letters wn-def

marked by disregard for critical standards or procedures