"I'm thinking of things that begin with the letter . ." G

Gladiola
Guard
   Guadalupe
       Giant
            Gerbils
                Gus
                     Gallows
                          Guns
                               Gerber
                                    Gas
                                   Gallons
                                  Gang
                                 George
                              Gong
                            Gabriel
                          General
                       Gibraltar
                     Goofy
                  Guy
                Guam
             Gumbo
          Goose
       Girdle
         Grapes
           Gennelle
               Ghost
                   Gaps
                  Giddyap
                Goshen
              Guilt
             Guitar
            Gargantuan
           Gargoyles
            Golly
              Gee