The phrase "leant against" means to be positioned with one's weight resting on something for support. There are several synonyms for this phrase, including "rested against," "propped against," "pressed against," "leaned on," "supported by," and "braced against." Each of these phrases refers to the same basic concept of using something as a support for one's body. These synonyms can be useful when writing or speaking to add variety to one's language and avoid repetitive phrasing. Overall, a writer or speaker should choose the synonym that best fits the tone and context they are aiming to convey.