The phrase "as ABC" is commonly used to describe something that is very easy or simple. Other synonyms for this phrase include "a piece of cake," "child's play," "effortless," "easy-peasy," "walk in the park," and "simple as pie." These phrases are often used in both formal and informal situations to emphasize how easy a task is or how quickly something can be achieved without any difficulty. Additionally, these phrases can also be used to express confidence in one's abilities or to encourage others to complete a task with ease. Overall, these synonyms for "as ABC" are valuable tools for effective communication in a variety of contexts.