How many letters does the top answer for “the act of continuing an activity without interruption” have?

The most common answer is continuance (11 letters).

Crossword clue: the act of continuing an activity without interruption

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

continuance 11 letters wn-def

the act of continuing an activity without interruption

continuation 12 letters wn-def

the act of continuing an activity without interruption