Define the English word extremely below. Extremely is an adverb. Also define these 0 related words and terms: .
- (degree) To an extreme degree.
- 2015 April 14, “America's First All-Girl Quintuplets Born in Texas Hospital”, in Time:
- The National Center for Health Statistics' latest data indicate that quintuplets are extremely rare, with 66 reported sets of five or more babies in 2013.