How many letters does the top answer for “a daily written record of experiences and observations” have?

The most common answer is diary (5 letters).

Crossword clue: a daily written record of experiences and observations

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

diary 5 letters wn-def

a daily written record of experiences and observations

journal 7 letters wn-def

a daily written record of experiences and observations