antifluoridationist
noun
an·ti·flu·o·ri·da·tion·ist 
ˌan-tē-ˌflu̇r-ə-ˈdā-sh(ə-)nist,
-ˌflȯr-,
ˌan-tī- : a person opposed to the fluoridation of public water supplies
Word History
First Known Use
1953, in the meaning defined above
Medical Definition
antifluoridationist
noun
an·ti·flu·o·ri·da·tion·ist -ˌflu̇r-ə-ˈdāsh-(ə-)nəst
: a person who is vigorously opposed to the fluoridation of public water supplies