The word "coadjuvancy" refers to cooperation or assistance in achieving a common goal. Its antonyms include competitiveness, opposition, resistance, hindrance, obstruction, and sabotage. Competitiveness suggests a spirit of rivalry or antagonism that prevents mutual support. Opposition refers to being against a particular action, proposal or idea. Resistance represents a force acting in opposition to another. Hindrance involves an obstacle or difficulty impeding progress. Obstruction suggests a barrier, either physical or mental, that prevents success, while sabotage refers to deliberate actions undertaken to prevent a positive outcome. These antonyms highlight the dimensions of conflict and the difficulties that may arise in achieving cooperation to achieve common goals.