The term 'is unsteady' can be described by the crossword solutions 'TOTTERS' (7 letters), 'reels' (5 letters) and 'sways' (5 letters). Tottering is an unsteady, swaying movement, often associated with old age or illness. Reeling is a similar movement, but usually more sudden and violent, as if one has been struck by something. Swaying is a gentle, side-to-side motion, often used to describe the movement of a boat in the water. All three words describe an unsteady, off-balance movement, which is the definition of the term 'is unsteady'.