34 synonyms for congratulation such as acclamation, a pat on the back, and acclaim. Congratulation is a noun, and its antonyms are blame and disapprobation.
A pat on the back, acclaim, acclamation, accolade, admiration, adulation, applause, approbation, approval, best wishes, bouquets, cheers, commendation, compliments, encomium, eulogium, eulogy, extolment, felicitations, good wishes, greetings, homage, honour, kudos, laudation, laurels, ovation, panegyric, plaudits, praise, salutes, testimonial, and tribute.