Om‐nis″cient (?), a. [Omni- + L. sciens, -entis, p. pr. of scire to know: cf. F. omniscient. See Science.] Having universal knowledge; knowing all things; infinitely knowing or wise; as, the omniscient God. — Om‐nis″cient‐ly, adv.
For what can scape the eye
Of God all-seeing, or deceive his heart
Omniscient? Milton.