When it comes to making decisions or taking chances, the phrase "flip of a coin" is often used to suggest the outcome is uncertain and left to chance. However, there are many synonyms that can be used to describe this action. One option is "toss of a coin," which is almost identical in meaning. Another alternative is "coin toss," which is a shortened version of the original phrase. "Heads or tails" is also commonly used, as well as "coin flip," "flipping a coin," and "coin throwing." Regardless of the phrasing used, the concept remains the same- a random decision with unpredictable results.