kept private or confined to those intimately concerned; "it was discussed privately between the two men"; "privately, she thought differently"; "some member of his own party hoped privately for his defeat"; "he was questioned in private"
by a private person or interest; "a privately financed campaign"
excite to an abnormal condition, of chafe or inflame; "Aspirin irritates my stomach"
excite to some characteristic action or condition, such as motion, contraction, or nervous impulse, by the application of a stimulus; "irritate the glands of a leaf"