Carcinogenic

Cancer causing chemical

HOWEVER this can also be used in slang to denote that something was extremely bad or horrible

Proper definition example:

Tar, found in cigarette smoke, is a carcinogen - this can cause cancer

Slang definiton example:

Person 1: How did you find the exam?

Person 2: Man, it was carcinogenic, especially that last page - I was LOST

by slavicscammer September 21, 2021

Carcinogeneous

Carcinogeneous, also known as carcinogenic, means substance that have potential to cause cancer.

Burning plastic can release carcinogeneous and pollutant gases.

by Hogan Bailey April 26, 2023