Sindarin 

tho-

verb. *will be

A possible future form “✱will be” appearing in the so-called “Túrin Wrapper” from the late 1950s for the verb na- “is”; see that entry for discussion.

Conceptual Development: There was a similar verb ᴱN. tha- “to make, cause to be” in Early Noldorin Word-lists derived from primitive ᴱ✶s’ta- (PE13/153). The later verb[?] tho- “will be” could be related, but was more likely inspired by the Sindarin future suffix -ath, which was based on primitive ✶thā “then, next” in notes from the late 1940s and early 1950s (PE22/97, 131). In Sindarin phonetic development, ✱thā would become tho in an unstressed position; compare imperative no “be!” (VT44/24) clearly derived from primitive ✶.