Words that you don’t use in real life, so you shouldn’t in your writing either:

1. Youth, as a noun. My least favorite of all.
2. Probe, as a verb. Dispensation for headlines.
3. Aid as a verb. Again, headline dispensation.
4. Author as a verb. 
4. Any form of munch, except in zoo animal stories. Students are always “munching hot dogs in the cafeteria” or something, and can you even munch something that is not crunchy?
5. Shopkeeper and merchant.
6. Tony as an adjective and, come to think of it, well-manicured. I am not talking about fingernails.

Other suggestions? Some people hate the word educators, and I totally get their point, but what other word comprises both teachers and administrators?