ppl. a. (UN-1 10.)
1785. Anna Seward, Lett. (1811), I. 18. What you tell us is an unexisting circumstance. Ibid. (1804), Mem. Darwin, 33. It is surely better to recede, even at the church-porch, than to plight at its altar the vow of unexisting love.
1834. Mrs. Jameson, Visits & Sk. (1839), I. 138. There are those who regard the unknown as the unexisting.