How many letters does the top answer for “the act of entering” have?

The most common answer is incoming (8 letters).

Crossword clue: the act of entering

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

incoming 8 letters wn-def

arriving at a place or position

ingress 7 letters wn-def

the act of entering

the act of entering again 67% similar → reentry