How many letters does the top answer for “without missing a year” have?

The most common answer is annually (8 letters).

Crossword clue: without missing a year

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

annually 8 letters wn-def

without missing a year

yearly 6 letters wn-def

a reference book that is published regularly once every year

without missing a week 50% similar → hebdomadally, weekly