Oxford English Dictionary has a new campaign to save old, unused words from completely dropping out of our language! Save the Words allows users to sign up to "adopt" words to keep them from being lost. You pick a word from their many options, and commit to use it as often as you can in normal conversation. It sounds kind of silly, but a lot of these words are wonderfully specific and meaningful and absolutely deserve to be reinvigorated!
I've adopted "helctic," which means "acting to drag or draw out." Isn't that a terribly useful word? This is also a good site for poets who are looking for the perfect ancient adjective to add flavor to their lines.