Mammoth Uncensored Word List:
31 - 17 letter words starting with im

imaginativenesses immunochemistries immunocompetences immunocompromised immunodiagnostics immunofluorescent immunogenetically immunogeneticists immunohematologic immunopathologies immunopathologist immunoprecipitate immunoregulations immunosuppressant immunosuppressing immunosuppression immunosuppressive immunotherapeutic impecuniousnesses impenetrabilities imperialistically imperishabilities impersonalisation impersonalization impersonification implicativenesses imponderabilities importunatenesses impregnablenesses impressionability improvisationally