[kibwen]

From 1983:

Although "optimum" is an absolute term, like "unique", it became common verbal practice to make it relative: "not quite optimum" or "less optimum" or "not very optimum". Mel called the maximum time-delay locations the "most pessimum".

https://users.cs.utah.edu/~elb/folklore/mel-annotated/node1....

[eynsham]

Even worse! ‘Optimum’ in English is a noun, not an adjective.

[kibwen]

From 1993:

Verbing weirds language.

https://www.gocomics.com/calvinandhobbes/1993/01/25