The phrase "hadst hold up on" can mean to pause or delay a particular action or decision. Synonyms for this phrase include wait, refrain, hold off, postpone, and defer. Waiting suggests taking a momentary break before proceeding further. Refraining implies abstaining from doing something entirely. Holding off is putting something on halt until the opportune moment. Postponing is rescheduling an action to a later time. Defer means to temporarily halt an action in order to consider other factors before making a decision. Knowing these synonyms can help you to better explain and understand the phrase "hadst hold up on" in context.