Expressing or conveying congratulations; showing pleasure and good wishes for someone's success.
Formed from 'congratulate' with the adjective-forming suffix '-ory' (tending to), with roots in Latin 'congratulari' dating to the 16th century.
You'll see this word all the time in 'congratulatory speech,' 'congratulatory message,' and 'congratulatory letter'—it turns the verb congratulate into an adjective describing things that are about wishing someone well.
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