ALL of this. Encourage people to try new words, to mess them up, to experiment with vocabulary, to learn complicated adjectives and verbs and nouns, because words are fun.
Also, don’t be a jerk.
AMEN SISTAH. PREACh
I am still recovering from reading The Subtle Knife. No one I knew ever used the word “subtle” in elementary school!
Specially people who were self-taught and English is not their first language.