An assigned period of time for an elected official is called a term.
the official term is called impeachment
The official term is immature They can be called immature or a low class person.
Mr. Daddy Turtle, or whatever you want. There is no official term.
There is no official term for either a male or a female platypus.
I am a soccer referee and I have never heard that term before, I would imagine it is the sideline.
There is no "official" demonym for someone from Guernsey. The accepted slang term is a "Donkey".
Yes, That would be a good name for it.
There is no official term for such an application, nor is there an official definition for "Windows-style", for that matter.
A country with two official languages is called bilingual, just like a person who speaks two languages.
There is no official name for a male or female platypus, just as there is no official name for the young, which are sometimes called platypups, not "puggles". The word "platypup" is not officially recognised as a legitimate term.
It did not really have an official name, I think. People called it the executive mansion or the president's home. It was unofficially called the Whjte House for a long time before T. Roosevelt used that term on his official stationery.
Nepotism is the term for what happens when an elected official gives good jobs to family members.
ImpeachmentThe House of Representatives has the sole authority to impeach (accuse) an official on charges of misconduct in office (called articles of impeachment).
The derogatory term would be 'Moonie' (after the person they follow, Reverend Moon) and the more official term would be Unificationist.
Equine is the official term for horses
Well im not sure if this is an official term, but I've always known that as a verbal contract.
The term could be "sovereign".
Many people from Maine refer to themselves as Maineiacs, but Mainers is the more formal/official term.
Theodore Roosevelt was the first to put the term on his official stationery. People called it the White House almost from the time it was built.
A government official who has power to apply the law and put it in force is called a magistrate. The term is also used for a judge in a minor court.
The official term is very basic, and suprisingly what you asked - it is the "sender." While there is no "official" term, the most common term for the originator of a message is "source", followed by "sender", "transmitter", "originator", and many more. The most pervasive word likely varies according to where you are and the dictates of your local dialect.