Eldamo : Middle Primitive Elvish : SUB

ᴹ√SUB root. “sink (esp. in water)”

The root ᴹ√SUB “sink, esp. in water” appeared in a rejected page of verbal roots from the Quenya Verbal System (QVS) written in 1948, where it had a derived past tense form ᴹQ. sumbe “*sank” as well as a distinct verb form ᴹQ. sumba- “to submerge” (PE22/127). It might be a later iteration of the unglossed root ᴱ√SUQU in the Qenya Lexicon of the 1910s, with derivatives like ᴱQ. sunqa “going down, descending; abysmal, deep, profound” and ᴱQ. suq- “fall, fail, go down, die down” (QL/87).

Neo-Eldarin: I think it is worth retaining ᴺ√SUB “sink” as a Neo-Root.

Reference ✧ PE22/127 ✧ “sink (esp. in water)”

Derivatives

> ᴹQ. sumba- “to submerge” ✧ PE22/127
> ᴹQ. #suv- “to sink (esp. in water)” ✧ PE22/127

ᴱ√SUQU root. “*descend”

See ᴹ√SUB for discussion.

Reference ✧ QL/87

Derivatives

> ᴱQ. sunqa “going down, descending; abysmal, deep, profound” ✧ QL/87
> ᴱQ. sunqe “going-down, descent, down-fall; abyss, depth” ✧ QL/87
- ⇒ ᴱQ. sunqele “sinking, falling, setting of heavenly bodies” ✧ QL/87
  - ⇒ ᴱQ. sunqelaina “falling, fading, setting” ✧ QL/87
  - ⇒ ᴱQ. sunqelaine “sunset” ✧ QL/87
  - ⇒ ᴱQ. sunqelea “westering, setting” ✧ QL/87
> ᴱQ. suq- “to fall, fail, go down, die down” ✧ QL/87