"What happening" is a common colloquial phrase used to ask about ongoing or upcoming events. However, there are several synonyms that can be used interchangeably with this phrase. Some examples include "what's going on," "what's up," "what's the news," "what's the latest," or simply "what's happening." Each of these synonyms can be used in a similar context and convey the same meaning. Additionally, using different synonyms helps to avoid repetition in conversation and adds variety to everyday speech. Overall, there are numerous ways to ask about current events and using synonyms can help to improve communication and language skills.