E- It equals mc2 in Einstein’s equation

SE- 135 degrees on a compass

NES- 1980s game platform for Mario et al.

SINE- In trigonometry, opposite over hypotenuse

SIREN- Mythologic creature who lures sailors with enchanting singing

RESIGN- Concede a chess game

STINGER- Dangerous anatomy on a hornet

STERLING- 92.5% silver alloy

RESULTING- Occurring as a consequence of

DISGRUNTLE – Put into a state of dissatisfaction, as with an employee or customer