C - Always has the value of K, never of S; thus Celeborn is 'keleborn, not 'Seleborn'.
CH - Always has the value of CH as in Scottish loch or German evil, never that of CH in English church
DH - Is always used to represent a TH as in then, but never as in thin
G - Always has the sound of the English G in get.
AI - Has the sound of English eye.
AU - Has the value of OW as in English how.
EI - Has the sound of ey in the English grey.
IE - Should not be pronounced as English piece, but with both the vowels I and E sounded.
UI - Has the sound of English ruin.
OE - Pronounced oe as in toy
EA and EO - Are not run together, but constitute two syllables.
Ú - Pronounced 'oo'.
ER, IR, UR - before a consonant or at the end of a word should not be pronounced as in English fern, fir, fur, but as in air, eer, oor.
E - At the end of words is always pronounced as distinct vowel, and in this position is written ë. It is likewise pronounced always in the middle of words
hi - Hi 
Aaye or Aiya - Quenya word which means 'Hail'.
"Ada" Meaning Father , spoken by Arwen to Lord Elrond
Aelin - 'lake, pool' in Aelin-uial.
Adanedhel - 'elf-man'.
Aduial - Eventide, twilight, 'Star-opening' Sindarin, from the Quenya Undomë.
Aha - Quenya word for rage.
Ai - Sindarin word for 'Ah'.
Aina - 'holy' in Aniur, Ainulindale.
Aiglos - Sindarin for 'Icicle' The Spear of Gil-galad, last of the Elven Kings in Middle-earth.
Alda - Quenya word for 'Tree'.
Aldalómë - Combination of Quenya words meaning 'tree-shadow' used by Treebeard the Ent.
Alqua - Sindarin word for 'swan'.
Amandil - Sindarin word for 'Priest'.
Amarth - Sindarin word for 'Doom'.
Ambarona - Combination of Quenya words meaning 'Worlds-birth' used by Treebeard the Ent.
Amon - Sindarin word meaning 'Mountain' or 'Hill'.
Ampa - Quenya word for 'Hook'.
An - 'long'.
Anarya - Quenya meaning 'Sun's-day'. The second day of the Elvish week.
Anca - Quenya word for 'Jaws'.
And - 'long'.
Ando - Quenya word for 'Gate'.
Andúril - 'Flame-of-the-West' (Quenya), the sword of Aragorn formerly know as 'Narsil'.
Andúnë - 'sunset, west'.
Anga - Quenya word for 'Iron'.
Ann-thannath - Combination of Sindarin words meaning 'The-Gift-of-Words'. A mode of verse and song, among the Elves of Beleriand.
Anna - Sindarin word for 'gift'.
Anod - 'Ent'. Sindarin word referring to the ancient race of tree guardians
Anto - Quenya word for 'Mouth'.
Arda - Quenya word for 'Region' or 'Realm' According to the lore of the High-Elves, Arda was the name given by The One to the World as he created it.
Áre - Quenya word for 'Sunlight'.
Asca - Means 'Hurry'.
Atan, Atani - Quenya for 'Father-of-Man. See Adan.
Avari - Quenya for "The Unwilling." See page Avari.
Áze - See Áre.
Aya- Hail! Greetings.
Balrog - Sindarin word for 'demon of might'.
Band - Sindarin word meaning - 'prison, duress'.
Bar - Sindarin for 'dwelling'.
Barad - Meaning 'tower'.
Beleg - Meaning 'mighty'.
Bragol - 'Sudden'.
Bregalad - 'Quickbeam', also is the nickname of an ent in the Two Towers.
Brethil - 'silver birch', also the name of an entwife.
Brith - 'gravel'.
Calen - Sindarin word for 'green'.
Calma - Quenya word for 'Lamp'.
Carca - Quenya word for 'fang'.
Celeb- Quenya word for 'silver'
Certar - Quenya word for 'Runes', referring in particular to the "Alphabet of Daeron".
Certhas - Sindarin. See Certar
Cirth - Sindarin word referring to the system of runes as a whole. See also Certar.
Coirë - The season of the year known in the Elves' calendar system know as 'stirring'. It was the last of the six seasons observed by the Elves, falling between winter (Hrivë) and spring (Tuilë). It is one of the Elven Seasons.
Coranar - Quenya word meaning 'Sun-round'. The solar year as recorded by the Elves. Also called a Loa.
Cormallen - Sindarin word meaning 'Ring-bearers'.
Cormarë - Quenya word meaning 'Ring-day'. The birthday of Frodo and Bilbo Baggins.
Coron - 'mound'.
Craban, Crebain - Sindarin word referring to an unfriendly species of black crows.
Cú - 'bow'.
Cuivie - 'awaking'.
Dae - 'shadow'.
Dagor - Sindarin for 'battle'.
Daro - Sindarin word meaning 'Descend'.
Del - 'horror'.
Din - 'silent'.
Dina - Means 'Be silent'.
Dol - Meaning 'head', often given to hills and mountains.
Dôr - Sindarin for 'land'.
Draug - 'wolf'.
Drego - Sindarin word which means 'Flee'.
Dú - Sindaron for 'night, dimness'.
Duin - '(long) river'.
Dúnadan, Dúnedain - Sindarin for 'Man-of-the-West'. Referring to the Men of Westernesse, or Númenor, and their descendents.
Dûr - 'dark'.
Ëar - Quenya for 'sea'.
Echor - 'encircling mountains'.
Echuir - Sindarin. See Coirë.
Edain - See Adan
Edhel - Sindarin for 'elf'.
Edhellen - Sindarin for 'of the Elves' or anything Elvish in general.
Edro! - Sindarin imperative meaning 'Open!'.
Eithel - 'well'. See kell
Êl, Elin, Elenath - Sindarin word for 'Star' (Elenath is the collective plural).
Eldar - 'People-of-the-Stars' (Quenya), The Elves name for themselves.
Eldarin - Quenya word referring to the generic name given to languages spoken by the Elves, Quenya and Sindarin.
Elear - Sindarin word for 'Visionary'.
Elen, Eleni, Elenion - Quenya word for 'Star' (Elenion is the collective plural).
Elenya - 'Stars'-day'. The first day of the Elvish week.
Emyn - Sindarin word for 'Hills', plural of Amon.
Endari - 'Middle-day', the middle of the year in the Elvish calendar.
Endóre - Quenya word for 'Middle-earth'.
Ennor - Sindarin word for 'Middle-earth'.
Enquië, Enquier - 'Week', Quenya word referring to the six day Elvish week.
Enyd - 'Ents'. See Anod.
Er - 'one, alone'.
Erebor - Sindarin for the 'Lonely Mountain'.
Ered - Quenya word for 'Mountain'.
Ereg - 'thorn, holly
Eryn - Sindarin word for 'Wood' or 'Forest'.
Esgal - 'screen, hiding'.
Esse - Quenya word for 'Name'.
Estel - Sindarin word for 'Hope'.
Estellio - 'trust'
Ethuil - 'Spring', the first season of the Elvish year.
Falas - 'shore, line of surf'.
Faroth - 'hunt, pursue'.
Faug - 'gape'.
Fëa - 'spirit'.
Fin - 'hair'.
Firith - Sindarin word for 'Fading', also the fourth season of the Elvish year.
Formen - Quenya word for 'North'.
Forn - Sindarin word for 'north'.
Fuin - 'gloom, darkness'
"Galad" - light
Gil - star
Gilraen - Sindarin name for Aragorn's mother.
Gurth - Death
Gaur - Werewolf
Gwador - brother-in-all-but-blood. For sister, see Muinthel.
Gwathel - sister-in-all-but-blood. For brother, see Muindor.
Luin - Sindarin word for blue. Used in "Ered Luin" - "Blue Mountains."
Mellon - The Elvish word for "Friend." Used by Gandalf to open the gates to the mines of Moria.
Minas - Meaning 'Tower'.
Mithrin - Sindarin word for 'Grey'. "Ered Mithrin"- is the Grey Mountains.
Muindor - Sindarin for 'brother'.
Muinthel - Sindarin for 'sister'.
Namárië - Quenya word for 'Farewell'.
Nan - Sindarin for 'Vale'. For example, Nan Curunir means "Saruman's Vale".
Navaer - Sindarin word for 'Farewell'.
Ndengina - Sindarin for 'Kill'.
Nikerym - Means 'Captain'.
Nimrais - Sindarin for 'White Peaks,' as in Ered Nimrais.
Numen - Sindarin for 'West'.
Naug OR Nogoth - Sindarin for 'Dwarf'.
Naugrim OR Negyth - Sindarin for 'Dwarves'.
Onodrim - Sindarin name for the Ents; singular Onod.
Orodruin - Sindarin name of Mount Doom. The name likely consists of orod ("mountain") + ruin ("fiery red").
Parma - Quenya for "Book".
Pelargir - Sindarin word for 'Garth of Royal Ships'.
Peredhel - Sindarin word for half-elvish or half-elf.
Parf - Sindarin, See Parma
Quendi - Quenya word for "the Speakers."
Quel re- Sindarin phrase for "Good day"
Silme - Quenya for "Starlight"
Tengwa - Quenya word for 'Letter', plural form "Tengwar" means 'Letters'.
tuilë - Quenya word for "spring"
thalias - Bravery
Thalin - Dauntless
Thang - Oppression
Thangail - Sindarin for a sort of shield-fence.
Tar - High
Úlairi - Quenya word for Nazgul or Ringwraith.
Ulaer - Sindarin word for Nazgul or Ringwraith.
Urulóki - Quenya word for "Heat", "Hot", or "Fire Serpents", also used as a name for Fire-Drakes.
Vala - Mighty
Valdra - Inferno