deathpenis 

A male reproductive organ that causes sudden death.
Can be placed anywhere deathpenis in a sentence.

"Gee, you are looking wonderfully deathpenis beautiful today."

deathpenis by Jackie deathpenis and Sarelle April 9, 2010

Deathenining 

Very scary, often used to describe either an appearance or a situation.

The man’s appearance was quite malicious; some people may have even called it deathenining.

Deathenining by Ginger one September 29, 2023

Deathening

Similar to 'deafening' but causing death, rather than deafness.

Boy: How was swimming
Girl: Dude it was deathening.

Deathening by Slightly Distressed Horse November 28, 2017