Akademik

falteringly
adverb
in an unsteady manner
-

he walked unsteadily toward the exit

-

The wounded soldier was swinging unsteadily on his legs

Syn: ↑unsteadily, ↑uncertainly
Ant: ↑steadily (for: ↑unsteadily)
Derived from adjective: ↑uncertain (for: ↑uncertainly), ↑faltering, ↑unsteady (for: ↑unsteadily)

Useful english dictionary. 2012.