1) Almost falls 2) Balances on the brink 3) Barely balances 4) Betrays unsteadiness 5) Fights for balance 6) Is headed for a fall 7) Is on the brink 8) Is precariously perched 9) Lacks stability 10) Moves unsteadily 11) Prepares for a fall 12) Reels 13) Rocks 14) Rocks on edge 15) Rocks on the edge 1) Seesaws