Gnomish
lûtha-
verb. to pass (of time); to come to pass, occur
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!
A verb appearing as G. lûtha- in the Gnomish Lexicon of the 1910s with two meanings: “pass, of time” and “come to pass, occur” (GL/55). It is clearly based on the early root ᴱ√LUHU having to do with time (QL/56).
Neo-Sindarin: The root ᴹ√LU survived in Tolkien’s later writings, so I would retain this verb. However, I would adapt it as ᴺS. lúda- “to pass (of time); to come to pass, occur, ✱happen”, since -tha was no longer a common verbal suffix in Tolkien’s later writings. I would further assume that it means “pass (of time)” when with a temporal subject: i dhû lúdant “the night passed”. When it has a non-temporal subject it means “come to pass, occur, ✱happen”: i vereth lúdant orvedui “the feast occurred/happened yesterday”.