As a child I invented the word " syritherous" This was a magical word and I used it on many occasions.
Headmaster " You are on the verge of a caning"
The Rebel :-" It was very " syritherous" of me and I am sorry"
Headmaster " Well don't let me see you in my office again"
........
An elder trying to help me be more humble, assigned me with helping with toilet duties.
The rebel:- " My doctor has said I have a " syritherous" phobia to disinfection materials"
.....
I think we should all have a word in our vocabulary that doesn't exist. It rarely enters some bodies mind to ask what " syritherous" means.