"Sucking face" is a term commonly used to describe an intense makeout session between two people. However, there are many other synonyms for this passionate act. Some alternatives include "smooching," "making out," "locking lips," "kissing passionately," or "necking." Each of these phrases has a slightly different connotation and level of intensity, but all involve the act of kissing another person with great fervor and passion. It's important to remember that all intimate acts should be based on mutual consent and respect, and while different people may have varying preferences for how to engage in physical affection, the most important thing is always to prioritize open communication and enthusiastic consent.