Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!

Qenya 

mandos

masculine name. Hell
Qenya [GL/18; GL/21; GL/45; LBI/Mandos; LT1A/Mandos; LT1I/Mandos; LT2I/Mandos; PE14/012; PE15/73; PME/058; PME/099; QL/037; QL/058; QL/099] Group: Eldamo. Published by

mandos

noun. doomsman, judge
Qenya [EtyAC/MBAD] Group: Eldamo. Published by

mandos

masculine name. (Dread) Imprisoner
Qenya [Ety/GOS; Ety/MANAD; Ety/MBAD; EtyAC/MAN; EtyAC/MBAD; LRI/Mandos; RSI/Mandos; SDI2/Mandos; SMI/Mandos] Group: Eldamo. Published by

mandor

noun. hell
Qenya Group: Eldamo. Published by

mandu

noun. hell, abyss
Qenya [LT1A/Mandos; MC/214; MC/221; PE16/062; PE16/072; PE16/074; PE16/075; PE16/077; QL/058] Group: Eldamo. Published by

morimando

masculine name. Dark Mando

A name for Mandos appearing in The Etymologies from the 1930s (Ety/MBAD, MOR), a compound of more “dark” and Mandos.

Qenya [Ety/MBAD; Ety/MOR; EtyAC/MBAD] Group: Eldamo. Published by

fatanyu

place name. Hell

Qenya name for G. Inthanfog “Hell” (GL/51). In might be a compound of “Lowest Air” and some form of tan(y)a “fire”, since its Gnomish equivalent contains G. Tanfa “hot air of the deep places”.

Qenya [GL/51] Group: Eldamo. Published by