Answer: dumbest

AnswerCrossword Clue
DUMBESTFurthest from bright
DUMBESTLeast articulate.
dumbestciturn
dumbestlacking the human power of speech dumb animals
dumbestlent
dumbestDUMB, incapable of speech
dumbestquiring no intelligence dumb luck
dumbestowing a lack of intelligence asking dumb questions