ə.ˈkʌm.plɪs ə.ˈkɑm.pləs əˈlaɪd kəˈlæbəɹeɪtɚ kəˈlæbəɹeɪtə form a confederation with; of nations form a group or unite The groups banded together united in a confederacy or league a person who joins with another in carrying out some plan (especially an unethical or illegal plan) someone who assists in a plot