Early Noldorin
gwesg
adverb. weakly
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
gwesg
adverb. weakly
A word appearing as ᴱN. gwesg “weakly” in Early Noldorin Word-lists of the 1920s (PE13/146). This is the only Elvish word in the published corpus associated with weakness without extra connotations.
Neo-Sindarin: I would retain this word as ᴺS. gwesg and would further assume it can be used as both an adjective “✱weak” as well as an adverb “weakly”. It is not clear what its etymology would be in Tolkien’s later conception of the languages, however (< √WESEK?)