A distinction is sometimes made between sanitarium (a kind of health resort, as in the Battle Creek Sanitarium) and sanatorium (a hospital). However, in America, the term sanatorium was often used throughout the 20th century as a socially acceptable term for psychiatric hospitals.
The traits of a gentleman include: A gentleman is generous with his time, wisdom, and resources. He willingly serves others and extends a hand to those in need. A gentleman possesses a positive outlook on life.
Freebase (2.00 / 1 vote) Rate this definition: Monsieur. Monsieur is an honorific title that used to refer to or address the eldest living brother of the king in the French royal court. It is also a customary French title of respect and term of address for a French-speaking man, corresponding to such English titles as Mr. or sir.