Answer:

SANEST

Answer	Crossword Clue
SANEST	Most lucid
SANEST	Most sound
SANEST	With the most marbles

SANEST	Least loco
SANEST	Most mentally together
SANEST	Most well-grounded
SANEST	Least likely to crack
SANEST	Least nuts
SANEST	Of least mad mind
SANEST	Most rational
SANEST	Most reasonable

SANEST	Most balanced
SANEST	Least loony
SANEST	Having the most marbles?
SANEST	Least likely to blow
SANEST	Least wacko
SANEST	Like one with the most marbles?
SANEST	Least mental
SANEST	Least wild

SANEST	Most level-headed
SANEST	Having the most marbles
SANEST	Most sensible
SANEST	Most together
SANEST	Most judicious
SANEST	Most levelheaded
SANEST	Least foolhardy
SANEST	Least wacky

SANEST	Most logical
SANEST	Balanced to the max
SANEST	Most clearheaded
SANEST	Most sensible.
SANEST	Soundest.
SANEST	Most lucid.
SANEST	Having the soundest judgment.
SANEST	Most rational.

SANEST	Most reasonable.
SANEST	Most logical.
SANEST	Most level-headed.
SANEST	Least deranged
SANEST	Least mad