How many letters does the top answer for “another word for congratulations” have?

The most common answer is extolment (9 letters).

Crossword clue: another word for congratulations

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

extolment 9 letters gen-syn

an expression of approval and commendation

kudos 5 letters gen-syn

an expression of approval and commendation

praise 6 letters gen-syn

express approval of

another word for congratulation 100% similar → felicitation

another word for about 50% similar → approximately, roughly, some

another word for terms 50% similar → footing

another word for under 50% similar → nether

another word for word 50% similar → phrase