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

See also: uncertain

• bigtoothed aspen
• bigwig
• Bihar
• Bihari
• bijou
• bijouterie
• bijugate leaf
• bijugous leaf
• bike
• bike path
• biker
• bikers
• bikeway
• bikini
• bikini pants
• bikkie
• bikky
• bilabial
• bilabiate
• bilateral
• bilateral contract
• bilateral descent
• bilateral symmetry
• bilateralism
• bilaterality