onomatomania
noun
on·o·mato·ma·nia
| \ ˌän-ə-ˌmat-ə-ˈmā-nē-ə
, -ˌmät-
\
, -ˌmät-
\
Medical Definition of onomatomania
: an abnormal obsession with words or names
especially
: a mania for repeating certain words or sounds