"Stand over" is an expression that means to monitor or supervise someone or something closely. It's a phrase that's used to describe a situation where someone is keeping watch or keeping a close eye on something. There are several synonyms for this phrase that can be used in different contexts. For example, words like oversee, watch, guard, lookout, and monitor can all be used as synonyms for "stand over." Depending on the context or situation, one of these alternatives may be a better fit. Regardless of which word or phrase is used, the meaning remains the same - the act of keeping a close watch or monitoring someone or something closely.