c.1300, "fact of appearing to view," from O.Fr. semblance, semblant "likeness, appearance," from sembler "to seem, appear," from L. simulare "to resemble, imitate," from similis "like" (see similar). Meaning "person's appearance or demeanor" is attested from c.1400; that
of "false, assumed or deceiving appearance" is from 1599. Meaning "person or thing that resembles another" is attested from 1513.