How many letters does the top answer for “later than usual or than expected” have?

The most common answer is belatedly (9 letters).

Crossword clue: later than usual or than expected

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

belatedly 9 letters wn-def

later than usual or than expected

late 4 letters wn-def

being or occurring at an advanced period of time or after a usual or expected time

tardily 7 letters wn-def

later than usual or than expected