The Collaborative International Dictionary
Paronymous
Paronymous \Pa*ron"y*mous\, a. [Gr. parw`nymos; para` beside, near + 'o`noma a name.]
Having the same derivation; allied radically; conjugate; -- said of certain words, as man, mankind, manhood, etc.
Having a similar sound, but different orthography and different meaning; -- said of certain words, as all and awl; hair and hare, etc.
Wiktionary
paronymous
a. 1 (context semantics English) Having the same root or derivation; conjugate. 2 (context semantics English) Having a similar sound, but different orthography and different meaning.