How many letters does the top answer for “the act of lopping or cutting off. cockeram.” have?

The most common answer is obtruncation (12 letters).

Crossword clue: the act of lopping or cutting off. cockeram.

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

obtruncation 12 letters web-def

The act of lopping or cutting off. [R.] Cockeram.

the act of cutting off. sherwood. 50% similar → recision

the act of cutting something off 50% similar → abscission