The quality or condition of being base. / The quality of being unworthy to hold virtues or value.

plural of baseness

(baseball) Having reached a base in an inning. / Located within the premises of a military base. / (aviation) Flying the base leg of an approach.

(transitive) To ground (an opinion, a conclusion, etc) on. / (transitive) To derive (a work) from.

plural of basing

Something from which other things extend; a foundation. / A supporting, lower or bottom component of a structure or object. / The starting point of a logical deduction or thought; basis.

Alternative form of BASE

(obsolete) Low in height; short. / Low in place or position. / (obsolete) Of low value or degree. / (archaic) Of low social standing or rank; vulgar, common. / Morally reprehensible, immoral; cowardly.

Acronym of building, antenna-tower, span, earth.

plural of Bas