Klingon is the constructed language spoken by the fictional extraterrestrial Klingon species in the Star Trek universe. Created by Marc Okrand, the language itself is centered around spacecraft, warfare, and weaponry — but it also reflects the directness and sense of humor of the Klingon culture. For example, the closest word you can use to express "hello" is "nuqneH," which actually means "What do you want?". There are also plenty of insults, as it is considered an art form. The mastery of Klingon is extremely uncommon on Earth. Join the galactic elite and start learning this fascinating language.