1) Ateeter 2) Faint 3) Insecure 4) Movable 5) Rickety 6) Shaky 7) Tired 8) Unbalanced 9) Unsafe 10) Unstable 11) Unsteady 1) Insecure 2) None too secure 3) Rickety 4) Rocky 5) Shaky 6) Treacherous 7) Trembling 8) Tremulous 9) Unbalanced 10) Uneven 11) Unsound 12) Unstable 13) Unsteady 14) Vacillating 15) Wavering 16) Wonky 
Wobbly is British slang for erratic, neurotic or extreme behaviour.
noun a member of the Industrial Workers of the World