Answer: basest

AnswerCrossword Clue
BASESTLeast dignified
BASESTMost dishonorable.
BASESTMost ignoble.
BASESTOf the lowest kind
BASESTMost sordid
BASESTBottom-of-the-barrel
BASESTMost inferior
BASESTLeast decent
BASESTLeast honorable
BASESTLowest.
BASESTMaximally mean
BASESTLike the lowest of low blows
BASESTMost indecent
BASESTMost mean-spirited
BASESTFurthest from noble
basestdeserving contempt; despicable
basestBASE, morally low
basestinferior
BASESTLeast noble
BASESTMost reprehensible, as motives
BASESTMost contemptible
BASESTMost immoral
BASESTMost abject
BASESTMeanspirited to the max
BASESTLowest of the low
BASESTSuperlatively inferior
BASESTLike the lowest common denominator
BASESTMost vile
BASESTMost ignoble
BASESTLeast moral
BASESTMost meanspirited
BASESTMost lowdown
BASESTMost despicable
BASESTMaximally meanspirited
BASESTSupremely mean