Utilize → Use
Provide → Give
Discontinue → Stop
Expedite → Speed up
Facilitate → Help
In regard to → About
Initiate → Start
Unable to → Can’t
Notify → Let know, tell
No later than → By
State-of-the-Art → Latest
With the exception of → Except for
Encounter → Meet
Is authorized to → can, may
Prior to → Before
Advantageous → Helpful
Fundamentals → Basics
Erroneous → wrong
Without further delay → Immediately
At this present time →Now
Due to the fact that → Because

Simple, straightforward language is much more powerful when addressing your audience. A professional tone is possible without making your audience do mental gymnastics to figure out what you’re saying.

Plus, plain language is more direct, and directness = trust.