- overt
- early 14c., "open to view," from O.Fr. overt (Fr. ouvert), pp. of ovrir "to open," from L. aperire "to open, uncover," from PIE *ap-wer-yo- from *ap- "off, away" + base *wer- "to cover" (see weir). Cf. L. operire "to cover," from the same root with PIE prefix *op- "over;" and Lith. atveriu "open," uzveriu "shut."