base
/ˈbās/
noun
the bottom of something considered as its support : foundation
that part of a bodily organ by which it is attached to another more central structure of the organism
the lower part of a wall, pier, or column considered as a separate architectural feature
the base of the mountain
the base of the thumb
verb
to find a foundation or basis for : to find a base for —usually used with on or upon
to make, form, or serve as a base for
adjective
lacking or indicating the lack of higher qualities of mind or spirit : ignoble
lacking higher values : degrading
being of comparatively low value and having relatively inferior properties (such as lack of resistance to corrosion)
seemed a base betrayal of idealism
a drab base way of life