Mariann Cook Andrews
But that’s in writing classes, which are usually geared towards writing fiction.
Better to follow what you learn in a business writing class, or even better, a journalism class. And consider the Plain Talk principles of using short words over longer, multi-syllable words. (Sesquipedalian, my foot!)
I like George Orwell’s rules on writing, from “Politics and the English Language” (esp. #6)
1. Never use a metaphor, simile, or other figure of speech which you are used to seeing in print.
2. Never use a long word where a short one will do.
3. If it is possible to cut a word out, always cut it out.
4. Never use the passive where you can use the active.
5. Never use a foreign phrase, a scientific word, or a jargon word if you can think of an everyday English equivalent.
6. Break any of these rules sooner than say anything outright barbarous.