How many letters does the top answer for “another word for negligence” have?

The most common answer is carelessness (12 letters).

Crossword clue: another word for negligence

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

carelessness 12 letters gen-syn

failure to act with the prudence that a reasonable person would exercise under the same circumstances

nonperformance 14 letters gen-syn

failure to act with the prudence that a reasonable person would exercise under the same circumstances

another word for about 50% similar → approximately, roughly, some

another word for terms 50% similar → footing

another word for under 50% similar → nether

another word for word 50% similar → phrase