Outfit refers to a group of people with a common goal, e.g., a team, group, company, etc.
Caustic means sarcastic or sharp. Acrimonious also has the same meaning.
Summit means top, peak or high point. Acme also has the same meaning.
Acolyte is one who assists a priest in a religious ceremony or service.
Concede and Acquiesce has the same meaning to accept or agree.