odd in WordNet English dictionary

1. beyond or deviating from the usual or expected
   "a curious hybrid accent"; "her speech has a funny twang"; "they have some funny ideas about war"; "had an odd name"; "the peculiar aromatic odor of cloves"; "something definitely queer about this town"; "what a rum fellow"; "singular behavior"
   curious  funny  odd  peculiar  queer  rum  rummy  singular 
   
2. not used up
   "leftover meatloaf"; "she had a little money left over so she went to a movie"; "some odd dollars left"; "saved the remaining sandwiches for supper"; "unexpended provisions"
   leftover  left over  left  odd  remaining  unexpended 
   
3. not divisible by two
   odd  uneven 
   
4. an indefinite quantity more than that specified
   "invited 30-odd guests"
   odd 
   
5. of the remaining member of a pair, of socks e.g.
   odd  unmatched  unmated  unpaired 
   
6. not easily explained
   "it is odd that his name is never mentioned"
   odd