ppl. a. (UN-1 10.)
Also unirritatingly (Webster, 1847).
1797. Abernethy, Surg. Ess., 98. The abscess at last became … un-irritating to the constitution.
1839–47. Todd’s Cycl. Anat., III. 613/2. The smooth and unirritating condition of the inner surface of the deserted shell.
1896. Mrs. Caffyn, Quaker Grandmother, 20. Sin is a chastener that conduces to unirritating niceness.
1925. Theodore Dreiser, An American Tragedy, I. xxxiii. 384. Yet it was these things that had been causing him to feel that he must now, and speedily, extract himself as gracefully and unirritatingly as possible from his intimacy with Roberta.
