Departure of the Galadhrim

[Inziladun]

Originally Posted by Galin

Yes, but without going into the detail of Words, Phrases, And Passages, Tolkien decided, for the second edition IIRC, to add...

'In Lórien at this period Sindarin was spoken, though with an 'accent', since most of its people were of Silvan origin. This 'accent' and his own limited acquaintance with Sindarin misled Frodo (as is pointed out in The Thain's Book by a commentator of Gondor). All the Elvish words cited in book I, ii, chs 6, 7, 8 are in fact Sindarin, and so are most of the names of places and persons. But Lórien, Caras Galadhon, Amroth, Nimrodel are probably of Silvan origin, adapted to Sindarin.'

Footnote to Appendix F (I'm pretty sure this was added for the second edition)

All the same, if Legolas was able to communicate with the Elves of Lórien regardless of what language it was, presumably many others of Thranduil's people also could have done so, which would have made Mirkwood an inviting place for them to stay after Celeborn's departure.