His mercurial disposition ultimately displaced him from his advisory posting.
Mercurial is mood swings: The mercurial patient had mood swings frequently.
We bought a mercurial barometer to help predict the weather.Her mercurial temperment made her an exciting actress to watch.It is hard to find a mercurial thermometer any more.
Please identify that bird for me...
would you please turn this fraction into a recipocal.
I would like for you to reactivate my account, please.
Sure! I am waiting for further instructions before I can proceed with the project.
Please move away from the precipice.
The window in my kitchen is transparent.
Please help me focus on my goals.
Please turn down the volume.
I would like to speak with the superintendent, please.
Use of the word 'please' would help to coax a favorable response out of me.