sigh-trance Share definition Flag Boring-ass trance that makes you sigh and roll your eyes, deriving from the term "psy-trance". "y0', dude, this sigh-trance shit is wack." sigh-trance by Thallium October 5, 2004 0 0 Get merch Get the sigh-trance mug. Buy Now — $32.95 See more merch