unsteady
un-stead-y
adjective
Not stable or firm; likely to fall or waver, lacking regularity.
"His hands were unsteady as he poured the tea."
Thesaurus
Synonyms: unfirm, unfixed, aflicker, flickering, spasmodic, faltering, spastic, tottery, shuddering, wobbling, palpitant, jerky
Antonyms: steady