Co`ex*ist (?), v. i. [imp. & p. p. Coexisted; p. pr. & vb. n. Coexisting.]
To exist at the same time; -- sometimes followed by with.
Of substances no one has any clear idea, farther than of certain simple ideas coexisting together.
So much purity and integrity . . . coexisting with so much decay and so many infirmities.
© Webster 1913.