The phrase "haddest a hold up on" is an archaic expression that means to delay or thwart someone or something. Some possible synonyms for this phrase include obstruct, impede, hinder, block, stall, detain, slow down, hamper, or stymie. These words all suggest a sense of hindrance or delay, whether intentional or not. Other possible alternatives might include words like frustrate, sabotage, or undermine, which suggest a more deliberate or malicious intent to undermine or interfere with something. Ultimately, the choice of synonym will depend on the context and intended meaning, as well as the tone and register of the language being used.