As someone named
Elthir I would hope that knowing simply one word gives me the correct answer here.
But as far as speaking Elvish, I can't. However even Tolkien himself couldn't speak any of his Elvish tongues.
http://www.elvish.org/FAQ.htmlBut people mean different things by 'speak Elvish'. This FAQ points out what people might mean when they ask about 'learning' Elvish.