The fear of long words.
No one was being sarcastic when they decided this was the perfect term for someone who is long word phobic, much.
“She only ever uses words of three syllables or less; she has hippopotomonstrosesquippedaliophobia”
“Hippopotomonstrosesquippedaliophobia; whoever decided on that word must have been in hysterics at the thought of some poor soul trying to tell people what their greatest fears were in years to come.”
Aginer (noun) (US informal)
A person who is against something; one who opposes a proposal, course of action, point of view, etc. Also more generally: a person having a habitually negative attitude; one who opposes any change as a matter of principle.
Early 20th century; earliest use found in Westminster (Philadelphia). From agin, regional and colloquial variant of again + -er.