== 語源 ==
テフヌトの名前の語源は定かではないが、創世神話でアトゥムが彼女を吐き出すように、吐き出す音のオノマトペである可能性もある。テフヌトの名前の語源は定かではないが、創世神話でアトゥムが彼女を吐き出すように、吐き出す音のオノマトペである可能性もある。さらに、テフヌトの名前は、後期のテキストでは、口が吐くと書かれていた<ref name="Ancient Egypt page. 183">Wilkinson, Richard H., The Complete Gods and Goddesses of Ancient Egypt, 2003, Thames & Hudson, London, isbn:0-500-05120-8, page183, https://archive.org/details/TheCompleteGodsAndGoddessesOfAncientEgypt/The%20Complete%20Gods%20and%20Goddesses%20of%20Ancient%20Egypt/page/n183/mode/2up, 4 May 2022</ref>。
The name Tefnut has no certain etymology but it may be an [[onomatopoeia]] of the sound of spitting, as [[Atum]] spits her out in some versions of the creation myth. Additionally, her name was written as a mouth spitting in late texts.<ref name="Ancient Egypt page. 183">{{cite book |last1=Wilkinson |first1=Richard H. |title=The Complete Gods and Goddesses of Ancient Egypt |date=2003 |publisher=Thames & Hudson |location=London |isbn=0-500-05120-8 |page=183 |url=https://archive.org/details/TheCompleteGodsAndGoddessesOfAncientEgypt/The%20Complete%20Gods%20and%20Goddesses%20of%20Ancient%20Egypt/page/n183/mode/2up |access-date=4 May 2022}}</ref>
Like most Egyptian deities, including her brother, Tefnut has no single ideograph or symbol. Her name in hieroglyphs consists of four single [[phonogram (linguistics)|phonogram]] signs t-f-n-t. Although the n phonogram is a representation of waves on the surface of water, it was never used as an [[ideogram]] or [[determinative]] for the word water (''mw''), or for anything associated with water.<ref>{{cite book|last=Betro|first=Maria Carmela|title=Hieroglyphics: The Writings of Ancient Egypt|year=1996|publisher=Abbeville Press|isbn=0-7892-0232-8|pages=[https://archive.org/details/michelangelovati00deve/page/163 163]|language=en|url=https://archive.org/details/michelangelovati00deve|url-access=registration}}</ref>