We don't have synonyms for knurd yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are knurl, nurd and knur.
(n) :
(rare) Alternative form of nerd; especially used to refer to one of several folk etymologies of the word. [(slang, sometimes derogatory) A person who is intellectual but generally introverted.]
(n) :
(rare) Alternative form of nerd; especially used to refer to one of several folk etymologies of the word. [(slang, sometimes derogatory) A person who is intellectual but generally introverted.]