"But hey" is a versatile phrase often used to introduce contrasting or opposing ideas in conversation. However, there are various synonyms that can be used interchangeably to convey a similar meaning. Some alternatives to "but hey" include "nevertheless", which highlights a counterpoint after acknowledging another perspective. Alternatively, "however" is frequently employed to introduce a contrasting opinion or outcome. Similarly, "yet" can be used to indicate a conflicting thought or situation. Moreover, "still" is an effective synonym, denoting a surprising or unexpected twist in the conversation. Other alternatives include "on the flip side", "then again", "regardless" or "albeit", among others. These synonyms provide flexibility in conversation, allowing for a seamless transition between contrasting ideas.