The following will help your writing be clearer and plainer. They are taken from the UK Government’s style guide (I know, who would’ve expected that?).
❌ leverage — go with influence or use instead, unless you mean leverage in its financial sense.
❌ progress — use work on or develop or make progress.
❌ dialogue — use speak to or discuss.
❌ utilise — write use instead
❌ agenda — use plan instead.
❌ advance — use to improve or something more specific to the context (unless you happen to be writing about an army advancing).
❌ deliver — use make, create or provide when writing about abstract concepts. To deliver is fine if you are actually writing about something that can be delivered, such as post or pizza.
❌ streamline — use simplify or actually write what it is that is actually being done to achieve a streamlined result.
❌ initiate — use start or begin.
❌ land — as a verb only refers to aircraft so use get or achieve or some other verb relevant to the context.
What verbs do you dislike to see in business writing?