Fuddy-duddy.
“Come on now, don’t be such a fuddy-duddy! EVERYone’s doing it!”
the word ‘flabbergasted’ more. No one ever uses that word anymore and it’s so fun!
glib- “I’m not trying to be glib, but I just don’t follow you.”
hither- “Ohhhh my proud, handsome knight… come hither. Come to me my darling!”
yon- “I noticed that yon mountaintop is covered with snow already. And it’s June!”
Please feel free to post more suggestions.
OH! I’ve been saying “Toodly-doo for you” for years, but I must also remember that phrase. It ties in very nicely with hoity-toity.