"feebly" in the adverb sense
in a faint and feeble manner
"the lighthouse, flashing feebly against the sleet-blurred, rocky backdrop of the coast of north west Norway"
in a halting and feeble manner
"reform, in fact, is, rather feebly, on the win"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License