How many letters does the top answer for “to act with demonstrative or foolish fondness, as one in love.” have?

The most common answer is spoon (5 letters).

Crossword clue: to act with demonstrative or foolish fondness, as one in love.

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

spoon 5 letters web-def

a piece of cutlery with a shallow bowl-shaped container and a handle; used to stir or serve or take up food