Arm's-length is a commonly used phrase to describe a business transaction or relationship that is impartial and objective. However, there are several synonyms that can also be used to convey a similar meaning. Some of these are: objective, disinterested, unbiased, uninvolved, neutral, impartial, aloof, and detached. These words all suggest a lack of bias or personal involvement in a situation. In many situations, it is necessary to maintain an arm's-length relationship to ensure fairness and integrity. Whether in a business setting or personal relationship, using synonyms for arm's-length can help to communicate the importance of being impartial and objective.