Per-Tefnut
𓏏𓆑𓈖𓏏𓁐     𓏏𓆑𓏌𓏏𓁐     𓏏𓆑𓈖𓏏𓆘
𓏏𓆑𓋔𓏏𓆇𓆗     𓏏𓆑𓏌𓏏MK   𓏏𓆑𓈖𓏏OK  𓏏𓆑𓈖𓏌𓏏𓆇𓆗
𓏏𓆑𓏌𓏏𓆗      𓏏𓆑𓈖𓏏𓆗     

MDC: tfnt, tfnwt
Gardiner:
Budge: Tefnut
​Allen : tfnwt , tfnt
​Old Kingdom : tfnt
New Kingdom: tfnwt
Alt Egyptian : tfnw.t
Transliteration: 
Coptic: 
Hebrew: Tfnut תפנות
Greek: Tphenis
Demotic:
Arabic: Tefnut تفنوت
English: 
Kemetic: 
Alt: 
Pronounced: 
Meaning: She that on of water from /tf/ that (F) /nw/ meaning water /t/ female ending, Her name can also mean to spit from /tf.n/ or /tfi/, some have claimed her name means orphan from /tfn/

Home:
Temple: ỉwnw/Iunu 'Place of pillars', Ôn/ אן Āwen/ און, Heliopolis/Ἡλιούπολις 'City of the sun' ;
tA-rmw/Taremu 'City of fish' Leontopolis Tell el-Muqdam 'City of the lions'

Nome: 

Consort

Children

Father
Rā
Atum

Mother
Iusaaset

Siblings
Shu
Hut-Hor/ Hathor
Ma'āt

Alternative Parentage

Priest names

Features
Lion headed female who has pointed ears with a headdress of the with a uraeus serpent, or a uraeus and solar disk.

Symbols
Lion
Greens/ blues
Water
Serpents 

Roles
Goddess of Rain, Air, Moisture, Weather, Dew, Lions, Fertility, and Water. Atum created both her and her brother in one of two ways, the first is by masturbating, the second is Atum swallows his semen, and spits it out to form the twins. In some version Shut was sneezed out of his nose and Tefnut was spat out like saliva.

Connection to other gods

Celebrations

Offering items
Water
Lions figures
Green Moss Agate
Malachite
Aquamarine
Amethyst
Coral
Rose Quartz
Clear Quarz
Sapphire 
Sea Salt
Selenite
Sodalite
Azurite
Blue Tourmaline
Opal
Pear
Blue Calcite
Blue Lace Agate
Blue Topaz
Chrysocolla
Turquoise  
Blue Lotus
Reeds
Papyrus 
MyrrhOnycha/Onyx species


Other names
HA(i)t ​
Dt/Djet 𓆓𓏏𓈀 (MK)

Epitaphs
Dt- Forever (fixed, unchanging, eternal sameness)
mHyt nfrt-- Beautiful north wind
tfn -- orphan
10th God of the Nine from Heliopolis​


ref.https://en.wikipedia.org/wiki/Tefnut, http://www.alchemy-works.com/elements_water.html

I have ascended to you
with the Great One behind me
and <my> purity before me:
I have passed by Tefnut,
even while Tefnut was purifying me,
and indeed I am a priest, the son of a priest in this temple.
~Papyrus Berlin 3055


Atum said: Tefnut is my living daughter, she is together with her brother Shu . "Life" is his name, "truth" is her name ... "life" sleeps with my daughter "truth" 
~Pyramid texts