The phrase "keeping at arm length" refers to maintaining distance or refusing to get closely involved with someone or something. Its antonyms include "embracing," "welcoming," "inviting," "empathizing," and "supporting." Embracing refers to accepting someone warmly, while welcoming denotes greeting someone with open arms. Inviting involves extending an offer or encouragement to someone, while empathizing denotes understanding and sharing another person's feelings. Finally, supporting refers to providing assistance, encouragement, or help to someone who may need it. These antonyms illustrate the opposite of "keeping at arm's length" and emphasize the importance of staying close, empathizing, and supporting one another.