How many letters does the top answer for “the act of sending off something” have?

The most common answer is despatch (8 letters).

Crossword clue: the act of sending off something

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

despatch 8 letters wn-def

send away towards a designated goal

shipment 8 letters wn-def

the act of sending off something

the act of cutting something off 60% similar → abscission