S. sûl n. “wind” (Category: Wind)
Conceptual Development: A precursor to this word is G. saul “great wind” from the Gnomish Lexicon of the 1910s (GL/67), derived from the early root ᴱ√SUHYU “air, breath, exhale, puff” as suggested by Christopher Tolkien (LT1A/Súlimo; QL/86).
Neo-Sindarin: Given its connection to the sound of wind, I think sûl would be used mostly for strong or noisy wind, including (but not limited to) gusts of wind, as opposed to more ordinary (and less noisy) gwae “wind”. This notion is supported by its Gnomish precursor G. saul “great wind”.
References ✧ NM/237; PE17/15, 124; SA/sûl
|√sū > sûl||[sūl] > [sūle] > [sūl]||✧ NM/237|
|√SŪ > sūl||[sūli] > [sūle] > [sūl]||✧ PE17/124|
References ✧ GL/67; LT1A/Súlimo