eristic
Concise Oxford English Dictionary © 2008 Oxford University Press:
eristic /ɛˈrɪstɪk/ formal
▶adjective of or characterized by debate or argument.
■ (of an argument or arguer) aiming at winning rather than at reaching the truth.
▶noun a person given to debate or argument.– derivatives
eristically adverb.
eristically adverb.
– origin C17: from Gk eristikos, from erizein ‘to wrangle’, from eris ‘strife’.
'eristic' also found in these Oxford entries:

