would
could
Should

BUT Mould

"Whence" isn't a fancy way of saying "when." It's a formal word that means from which, from where:

Return this evil cat *whence* it came!

ENVIOUS = feeling envy.

ENVIABLE = causing envy.

My *enviable* collection of rare books 📚 makes even universities *envious* of me.😁

Omni=everything

Omnipresent
Omnipotent
Omnivorous
Omnificent