All it is a phrase commonly used when referring to something that is not difficult or complicated. It can also mean completing a task quickly or easily. Some synonyms for the phrase include "a breeze," "simple," "effortless," "piece of cake," and "no sweat." These words can be used interchangeably depending on the context in which they are used. For instance, if you are discussing a task with a friend, you might say, "Don't worry about it, it's a breeze," meaning that it is easy to accomplish. In summary, there are various synonyms for the phrase "all it," and they can be used to convey a similar meaning depending on the situation at hand.