Literally translating as "That Water",[REF] the name Tefnut has been linked to the verb 'tfn' meaning 'to spit'[REF] and versions of the creation myth say that Ra (or Atum) spat her out and her name was written as a mouth spitting in late texts [REF].
Like most Egyptian deities, including her brother, Tefnut has no single ideograph or symbol.