How many letters does the top answer for “the act of releasing from an attachment or connection” have?

The most common answer is detachment (10 letters).

Crossword clue: the act of releasing from an attachment or connection

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

detachment 10 letters wn-def

the act of releasing from an attachment or connection

disengagement 13 letters wn-def

the act of releasing from an attachment or connection