Antonyms for the phrase "at side of" would include words such as opposite, far away, apart, far off, and distant. These words indicate a separation or distance between two objects or individuals, rather than being close together. Other antonyms could include the words on the other side, at a distance, isolated, or unconnected. These words suggest that something is not close by, or that there is a lack of proximity or association. Understanding antonyms for the phrase "at side of" can help expand our vocabulary and communication skills by allowing us to more clearly convey distance or separation between objects or individuals.