Definify.com
Webster 1913 Edition
Impotently
Im′po-tent-ly
,adv.
 In an impotent manner. 
But taken and 
The king of Scots.
impounded 
as a stray,The king of Scots.
Shakespeare
Webster 1828 Edition
Impotently
IM'POTENTLY
,adv.
  Definition 2025
impotently
impotently
English
Adverb
impotently (comparative more impotently, superlative most impotently)
- In an impotent manner.
 
References
- impotently in The Century Dictionary, The Century Co., New York, 1911
 - impotently in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913