Answer: steadiest

AnswerCrossword Clue
STEADIESTMost balanced
steadiestFirmly fixed, supported, or balanced; not shaking or moving
steadiest(of a person) Sensible, reliable, and self-restrained
steadiestRegular, even, and continuous in development, frequency, or intensity
steadiest(of a ship) Moving without deviation from its course
steadiestNot faltering or wavering; controlled
steadiestSTEADY, firm in position
steadiestNot changing; regular and established
STEADIESTStill the most?
STEADIESTMost reliable
STEADIESTBest on the balance beam, maybe
STEADIESTBest on the balance beam, perhaps
STEADIESTMost stable
STEADIESTMost firm
STEADIESTLeast shaky
STEADIESTLeast skittish.
STEADIESTMost like a rock