odd / äd/ • adj. 1. different from what is usual or expected; strange: the neighbors thought him very odd | it's odd that she didn't recognize me. 2. (of whole numbers such as 3 and 5) having one left over as a remainder when divided by two. ∎ (of things numbered consecutively) represented or indicated by such a number: he has come to us every odd year since 1981. ∎ [in comb.] in the region of or somewhat more than a particular number or quantity: she looked younger than her fifty-odd years.3. happening or occurring infrequently and irregularly; occasional: neither did she want a secret affair, snatching odd moments together. ∎ spare; unoccupied: when you've got an odd five minutes, could I have a word?4. separated from a usual pair or set and therefore out of place or mismatched: he's wearing odd socks.DERIVATIVES: odd·ish adj. (in sense 1).odd·ly adv. (in sense 1) oddly enough, I didn't feel nervous | she felt oddly guilty. odd·ness n.