1.
but you know, but like, however (casual)
A casual conversation opener used to introduce a contrasting point or objection. The particle さ adds a soft, conversational tone.
Usage
でもさ is used at the beginning of a sentence or clause to softly push back or introduce a different perspective. The さ particle makes it feel less confrontational than でも alone.
Very common among younger speakers and in casual conversation among friends. Not appropriate for formal settings.
The さ in でもさ serves the same softening function as in other casual expressions like ねえさ, あのさ, etc.