loggerheaded

/ˈlɔːɡərˌhɛdɪd/
adjective
  1. Stubborn; foolish; having a blockhead.
    • His loggerheaded refusal to listen cost the team the game.
    • The loggerheaded old man insisted on doing it his way.
    • She gave a loggerheaded answer that made no sense at all.
Antonyms