Answer: soberest

AnswerCrossword Clue
SOBERESTLeast lit
SOBERESTLeast loaded
SOBERESTMost solemn.
SOBERESTMost sensible and staid
SOBERESTLeast drunk
soberestto make or become sober
soberestnot drunk
soberestSOBER, temperate
soberestserious
soberestrestrained