@@@ Initial development hard to explain ... elsewhere ty- gives k-
Doriathrin
dair
noun. shadow of trees
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.
Gnomish
dair
noun. play, merriment
Old Noldorin
dîr
noun. adult male, man (elf/mortal/other speaking race)
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.
A noun meaning “shadow of trees”, derived from root ᴹ√DAY “shadow” and marked as identical in both the Ilkorin and Doriathrin dialects (Ety/DAY). Its primitive form was probably ✱✶dair- ending in some final vowel, now lost; Helge Fauskanger suggested it might be ✱✶dairē (AL-Ilkorin/dair, AL-Doriathrin/dair).