Easily shaken; tottering; unsound.
Shaking or trembling.
Wavering; undecided.
Full of shakes or cracks; cracked.
Nervous, anxious.
In a lively and vigorous way; sprightlily.
Animated, gay, or vivacious; lively, spirited.
Of a person: full of life and vigour, especially with a light and springy step.
Especially of an older person: energetic and in good health; spry.