If we define "sarcasm" by "highlighting someone's flaws in an humorous yet offensive manner", we can go past that just by taking away the only good part i.e. humor. The result is a direct insult, no bells and whistles.
If by "past" you mean "even less directly", we keep humor but we have to change the "highlighting" to something more subtle i.e. "hinting". I don't know if there's a name for that, but I know subtle sarcasm is certainly possible but quite difficult to practice.
[–] Wedhro ago
If we define "sarcasm" by "highlighting someone's flaws in an humorous yet offensive manner", we can go past that just by taking away the only good part i.e. humor. The result is a direct insult, no bells and whistles.
If by "past" you mean "even less directly", we keep humor but we have to change the "highlighting" to something more subtle i.e. "hinting". I don't know if there's a name for that, but I know subtle sarcasm is certainly possible but quite difficult to practice.