The antonyms for the phrase "was beside" indicate a state of distance, separation or absence. As opposed to beside, antonyms could be far, distant, away, far-off, remote and in another room. These words signify a sense of detachment or dissociation, indicating the absence of proximity between two entities. One could also use words with a connotation of hostility such as antipathy, rejection, animosity or disapproval when considering the antonyms for "was beside." Overall, antonyms for "was beside" carry a negative or indifferent interpretation, indicating a lack of closeness or connection.