Akademik

uncertainly
adverb
1. in an unsteady manner (Freq. 2)
-

he walked unsteadily toward the exit

-

The wounded soldier was swinging unsteadily on his legs

Syn: ↑unsteadily, ↑falteringly
Ant: ↑steadily (for: ↑unsteadily)
Derived from adjective: ↑uncertain, ↑faltering (for: ↑falteringly), ↑unsteady (for: ↑unsteadily)
2. showing lack of certainty
-

he paused uncertainly

Derived from adjective: ↑uncertain

Useful english dictionary. 2012.