Base

not adhering to ethical or moral principles

of low birth or station (`base' is archaic in this sense)

serving as or forming a base

having or showing an ignoble lack of honor or morality

(used of metals) consisting of or alloyed with inferior metal

debased; not genuine

illegitimate

lowest support of a structure

a support or foundation

the stock of basic facilities and capital equipment needed for the functioning of a country or area

any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water

installation from which a military force initiates operations

the principal ingredient of a mixture

a flat bottom on which something is intended to sit

(anatomy) the part of an organ nearest its point of attachment

the bottom or lowest part

the bottom side of a geometric figure from which the altitude can be constructed

the most important or necessary part of something

a place that the runner must touch before scoring

(numeration system) the positive integer that is equivalent to one in the next higher counting place

a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA)

a lower limit

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

(linguistics) the form of a word after all affixes are removed

the place where you are stationed and from which missions start and end

a terrorist network intensely opposed to the United States that dispenses money and logistical support and training to a wide variety of radical Islamic terrorist groups; has cells in more than 50 countries

(electronics) the part of a transistor that separates the emitter from the collector

use as a basis for; found on

situate as a center of operations

use (purified cocaine) by burning it and inhaling the fumes