When someone leans against something, they might also be propping up against it, reclining on it, slouching beside it, or resting against it. These synonyms describe different ways that someone might position themselves against an object, but they all convey a sense of relaxation or comfort. Depending on the context, other synonyms for leaning against might include supporting, bolstering, buttressing, or bracing oneself against something. Altogether, these words capture the flexibility and diversity of human posture, and remind us of the many ways we can find a comfortable position in the world around us.