wobbly

Concise Oxford English Dictionary © 2008 Oxford University Press:
wobbly/ˈwɒbli/

▶adjective (wobblier, wobbliest)

• 1 tending to wobble.

  ■ weak and unsteady from illness, tiredness, or anxiety.

• 2 uncertain or insecure.

▶noun Brit. informal a fit of temper or panic: I drove off and threw a wobbly.

– derivatives
wobbliness noun.