congratulations

UK: /kənˌɡrætjʊˈleɪʃənz/

Collins Concise English Dictionary © HarperCollins Publishers::

congratulations / kənˌɡrætjʊˈleɪʃənz/ noun:plural , sentence_substitute

1. expressions of pleasure or joy; felicitations

WordReference Random House Learner's Dictionary of American English © 2026

con•grat•u•la•tion /kənˌgrætʃəˈleɪʃən, kəŋ-/   n. 

1. [uncountable] the act of congratulating.
2. congratulations, [plural] an expression of pleasure in the good fortune of another:
   We sent our congratulations to the happy couple.

interj. 

3. congratulations. (used to express pleasure in the good fortune of another):
   Congratulations! You graduated.

WordReference Random House Unabridged Dictionary of American English © 2026

con•grat•u•la•tion  (kən grach′ə lā′shən or, often, -graj′-, kəng-), n. 

1. the act of congratulating.
2. congratulations, an expression of joy in the success or good fortune of another.

interj. 

3. congratulations, (used to express joy in the success or good fortune of another):
   Congratulations! You have just won the lottery!

• Late Latin congrātulātiōn- (stem of congrātulātiō), equivalent. to congrātulāt(us) (see congratulate) + -iōn- -ion
• late Middle English 1400–50

con•grat′u•la′tion•al, adj.