Straight off is a common phrase that is used to mean immediately or right away. However, there are numerous synonyms that can be used to replace this phrase while still maintaining the same meaning. Some of these synonyms include promptly, instantaneously, immediately, right now, without delay, straight away, quickly, immediately, forthwith, instantly, and soon after. All of these synonyms can be used in a variety of contexts depending on the situation at hand, and they allow for a more creative and diverse use of language when compared to using the same phrase over and over. So, the next time you want to express immediacy, try using one of these synonyms for straight off.