A Japanese word, Tsundoku can also refer to the actual piles of unread books.

If you just can’t get them out of your head and their lovin’ is all you think about, it’s not love, it’s limerence. At least according to psychologist Dorothy Tennov who conceived the term in 1979.

With a literal translation of “foreign tongue”, Xenoglossia is similar to the act of “speaking in tongues” but without the religious implications. While strange, it definitely sounds easier than studying a language.

More positive than lethargy or listlessness, Langour is that dreamy, gooey feeling often achieved in a hammock on the beach, or before a nap on a rainy afternoon.

Also known as “far-sickness”, this German word refers to a more intense version of wanderlust. It can be felt for real places as well as imaginary ones such as Tatooine, Middle Earth and cinematic depictions of Paris in the 1920s.