How many letters does the top answer for “formal expression of respect” have?

The most common answer is devoir (6 letters).

Crossword clue: formal expression of respect

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

devoir 6 letters wn-def

formal expression of respect

an expression of respect 67% similar → honorific

a formal expression of esteem 50% similar → respects

a formal expression of praise 50% similar → encomium, eulogy, paean