Yesh

1. A way to express hyper positive emotion and/or excitement without needing to increase volume; instead of yelling or screaming "YES!!!", one can merely say "yesh" in a normal volume or even quietly. See yas, YES, YES, yay but not yeet.

2. (mathematics) abbreviation for the hyperbolic yes function.

1. A: "Dude, you just won the lottery!"
B: "Yesh."

2. D(yesh(n),n) = {wesh(n) where 0<n<100, else FUCK.YES(n)}