Counterplays refer to the strategies or tactics used to counteract an opponent's moves in a competitive situation. Some antonyms for counterplays can include misplays, mistakes, or blunders, which would result in giving the opponent an advantageous position. Another antonym for counterplays could be complacency, which refers to a state of being satisfied with the current position and not actively seeking to improve or defend it. Alternatively, in a non-competitive context, counterplays could be contrasted with cooperation or collaboration, which involve working with others towards a common goal rather than trying to outmaneuver or defeat them.