There are various synonyms that can be used instead of the phrase "used profanity". Some common alternatives include swearing, cursing, using foul language, expletive-laden speech, uttering obscenities, and vulgar language. These terms all refer to the use of language that is considered offensive or taboo in certain contexts and can be used to express strong emotions like frustration, anger, or shock. However, it is important to note that the use of such language can be inappropriate, offensive, or hurtful to others, and should be avoided in many professional and social settings. Hence, choosing the right words to communicate one's emotions is crucial for effective communication without causing any harm.