Extinctual 

Unlike the Instinctual, which is an automatic response created within a species through normal evolution for the survival of the species, an extinctual response is a misguided intellectual or ignorant reaction to environmental stimuli resulting in a negative outcome for, or even possibly extinction of, the species, or the egregore of a species.
“Ingestion of harmful chemicals such as alcohol may be an extinctual response to stress”
Extinctually (adv)
Extinctualism (n.)

Wrath may be an extinctual response to stress.

Extinctual by Rgeb October 16, 2019

extinctation

when insects (or animals) are driven to extinction deliberately by humans who hate them.
this is done for the greater good.

me : we should start a extinctation business
baldley: yes.

extinctation by gremlinchild000 June 19, 2023

extinctualize 

1) a verb: to make extinct; specifically active, intentional participation in an activity resulting in extinction
2) a threat: "Don't make me extinctualize your ass"
3) also extinctify, extincified; the more passive current and past tenses, respectively

I am going to extinctualize those rats.

Men, we will extinctify the enemy before they extincify us.

extinctualize by Soren Koelling October 11, 2005

Extentually 

Meaning grown in a certain amount of time or growing

My brain has extentually grown in the past year

Extentually by Robert helweg January 17, 2021