foundation

education or instruction in the fundamentals of a field of knowledge

“he lacks the foundation necessary for advanced study”

lowest support of a structure

a woman's undergarment worn to give shape to the contours of the body

the fundamental assumptions from which something is begun or developed or calculated or explained

the act of starting something for the first time; introducing something new

“the foundation of a new scientific society”

an institution supported by an endowment

the basis on which something is grounded

“there is little foundation for his objections”