morally low; without estimable personal qualities; dishonorable; meanspirited; selfish; cowardly.

of little or no value; worthless

hastily composed of base materials.

debased or counterfeit

an attempt to eliminate the base coinage.

characteristic of or befitting an inferior person or thing.

of illegitimate birth.

not classical or refined

base language.

Old English Law . held by tenure less than freehold in return for a service viewed as somewhat demeaning to the tenant.

Archaic .

of humble origin or station.

of small height.

low in place, position, or degree

base servitude.

Obsolete . deep or grave in sound; bass

the base tones of a piano.

Music Obsolete . bass 1 ( defs. 3, 4 ) .