The phrase "back to the wall" describes a situation where someone is in a difficult or desperate position and has limited options. Synonyms for this phrase include "in a bind," "up against it," "cornered," "between a rock and a hard place," "at a dead end," "in dire straits," and "at the end of one's rope." These phrases are often used to express a sense of being trapped or stuck with no clear path forward. While these situations can be stressful, finding creative solutions or seeking outside help can often help someone get out of their predicament.