ᴺQ. [Q.] astalda adj. “*valiant; ⚠️strong” (Category: Strong, Mighty, Powerful)
An adjective glossed “strong” and derived from the root √STAL in a page of notes having to do with “large & small” words, probably from the late 1960s (PE17/115). This page was rejected, but Tolkien used Astaldo “Valiant” as a sobriquet of Tulkas in later versions of The Silmarillion. As such, I would assume [ᴺQ.] astalda is valid for purposes of Neo-Quenya, but I would use it with the meaning “*valiant” rather than “strong”.
Reference ✧ PE17/115 ✧ “strong”
|√STAL > astalda||[astalda]||✧ PE17/115|