Using all letters

                                                                           tetanization

                                                                          The other words:

                                                                              aeonian

                                                                               anent

                                                                               annie

                                                                             annotate

                                                                              antenna

                                                                             antennae

                                                                            antoinette

                                                                               atone

                                                                             attention

                                                                               azine

                                                                               azote

                                                                               eaten

                                                                               enate

                                                                              entente

                                                                              eonian

                                                                               inane

                                                                            inattention

                                                                             initiate

                                                                              innate

                                                                              intent

                                                                             intention

                                                                              intone

                                                                              ionize

                                                                              nannie

                                                                              neaten

                                                                              neonate

                                                                             nineteen

                                                                              notate

                                                                               oaten

                                                                               ozone

                                                                              ozonize

                                                                               tazze

                                                                              tenant

                                                                               tenet

                                                                               tenon

                                                                              tittie

                                                                               tonne

                                                                              tzetze

                                                                               zazen

                                                                              zenana