1. In an unsteady manner
   - unsteadily, falteringly, woozily 
2. Showing lack of certainty
   "he paused uncertainly"

See also: uncertain

• complicatedness
• complication
• complicit
• complicity
• complier
• compliment
• complimentary
• compliments
• complin
• compline
• complot
• comply
• compo
• compone
• component
• component part
• comport
• comportment
• compos mentis
• compose
• composed
• composedly
• composer
• composing
• Compositae