An apparently verbal root as √SRIS “snow” appearing in etymological notes from around 1959 with derivatives like Q. hrisse “fall of snow” and Q. hríza “it is snowing”; it replaced a deleted root √SRITH “snow” (PE17/168).
Primitive elvish
is
root. know
ista-
verb. to know
sris
root. snow
lasa
adverb. not it = it is/was not so
tul-
verb. come, is coming, has come, is here, I come, have come
eke
root. it is open
eñ-
verb. to exist
ringi
root. cold
Tolkien used very similar forms for Elvish words for “cold” for all of his life. The earliest iteration of this root was unglossed ᴱ√RIŊI in the Qenya Lexicon of the 1910s with derivatives like ᴱQ. rin (ring-) “dew” and ᴱQ. ringa “damp, cold, chilly” (QL/80). The root had similar derivatives in the contemporaneous Gnomish Lexicon such as G. rî “coolness, cool” and G. ring “cool, cold” (GL/65). In The Etymologies of the 1930s Tolkien gave the root {ᴹ√RINGĀ >>} ᴹ√RINGI “cold” with derivatives like ᴹQ. ringe/N. rhing “cold” (Ety/RINGI; EtyAC/RINGI). Primitive forms ✶riñgi “chill” and ✶riñgā appeared in Common Eldarin: Noun Structure from the early 1950s (PE21/80), and Christopher Tolkien mentioned √ring as the basis for cold words in the Silmarillion Appendix (SA/ring).
lā-
verb. to not be
barathī
noun. queen
ros-
verb. to rain
srith
root. snow
an
preposition. to
as(a)
preposition. and
imbi
preposition. between
khyē̆
pronoun. other person
khā
adverb. far
lossē
noun. snow
mai
adverb. well
manā
adjective. what
mat-
verb. to eat
mīni
preposition. between
mō
noun. person
rossētā-
verb. to rain
san-
pronoun. that
si
root. know
uba-
verb. impend,be imminent,approach,draw near
us(u)kwē
noun. dusk
The root √IS was the basis for words having to do with “knowledge” for all of Tolkien’s life, as represented by the verb Q. ista- “to know” which likewise retained the same form and meaning for decades. The root first appeared as ᴱ√ISI in the Qenya Lexicon of the 1910s, where somewhat cryptically Tolkien said its Gnomish form was GIS or IS (QL/43). This is mysterious because there were no such Gnomish words beginning with gis- in the contemporaneous Gnomish Lexicon, but there is an Early Noldorin word ᴱN. gist- “to know” from the 1920s, probably derived from ᴱ✶ʒist- (PE13/144, 146); in this early period initial ʒ- > g- in Gnomish (PE12/17).
Tolkien seems to have abandoned this Noldorin variant, giving the root only as ᴹ√IS in The Etymologies of the 1930s (Ety/IS). In this form it continued to appear in Tolkien’s later writings (PE17/155; PE22/129; VT41/6; VT48/25). In one place Tolkien gave the root in inverted form √SI (PE22/134), and such an inversion appeared in some of its derivatives, such as Q. síma “imagination, mind” (VT49/16) and sinte the irregular past tense of Q. ista-. However, the majority of its derivatives are from √IS.