- dorn (tough), lenited dhorn, pl. dyrn; 2) tharn (sapless, rigid, withered), pl. thern.
Doriathrin
thrôn
adjective. stiff, hard
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Middle Primitive Elvish
star
root. stiff
starāna
adjective. stiff, hard
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
Sindarin
dorn
adjective. stiff, tough
tarch
adjective. stiff, tough
dorn
stiff
dorn
stiff
(tough), lenited dhorn, pl. dyrn
tarias
stiffness
(i darias, o tharias) (toughness, difficulty), pl. teriais (i theriais) if there is a pl.
tarlanc
stiff-necked
(obstinate), lenited darlanc, pl. terlainc.
tharn
stiff
(sapless, rigid, withered), pl. thern.
Quenya
norna
stiff, tough; hard, firm, resistant
norna adj. "stiff, tough; hard, firm, resistant" (WJ:413, PE17:106), "thrawn, tough, obdurate", mainly applied to persons (PE17:181)
tauca
stiff, wooden
tauca ("k") "stiff, wooden" (PE17:115)
An adjective meaning “stiff, hard” derived from primitive ᴹ✶starāna (Ety/STARAN). First the unstressed vowel in the first syllable vanished to produce the favored combination [tr], after which the [[ilk|initial [s] spirantalized the following [t] to [θ] (“th”)]], while the [[ilk|long [ā] became [ō]]]. All these developments were suggested by Helge Fauskanger (AL-Ilkorin/thrôn).