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conÂ·gratÂ·uÂ·late. tr.v. conÂ·gratÂ·uÂ·latÂ·ed, conÂ·gratÂ·uÂ·latÂ·ing, conÂ·gratÂ·uÂ·lates. To express one's joy or good wishes to (someone) regarding that person's achievement or good fortune: congratulated her on her promotion.
Definition of clap. 1  1 : a device that makes a clapping noise. 2  2 obsolete : a sudden stroke of fortune and especially ill fortune. 3  3 : a loud percussive noise; specifically : a sudden crash of thunder.  4a : a sudden blowb : a friendly slap a clap on the 1  back. 5 : the sound of clapping hands; especially : applause.