Correct spelling for the English word "Ginjer" is [d͡ʒˈɪnd͡ʒə], [dʒˈɪndʒə], [dʒ_ˈɪ_n_dʒ_ə] (IPA phonetic alphabet).
The word Ginjer is a variant of the word Ginger which originated from the Old English word gingifer or gingifere. It came from the Medieval Latin word gingiber, which was derived from the Greek word zingiberis. This, in turn, was adopted from the Sanskrit word srngaveram, which means horn-shaped root, referring to the shape of the ginger rhizome. The word Ginjer seems to be a different spelling or pronunciation of Ginger.