Hikikomori·The phenomenon of reclusive adolescents or adults who withdraw from social life, often seeking extreme degrees of isolation and confinement. Japanese
Vituviha·When a woman hates another woman because she's better-looking, brighter or more successful than her. Estonian
Klickstrecke·Roughly, click trail. Those click-through galleries that e.g. news websites do to annoy people, increase page impressions and thus ad revenue. German
សើចសល់·Leftover laughing. Used to let someone (outside of the joke) know you're not laughing at them. Khmer
Nestbeschmutzer·Nest soiler - Someone whose actions result in their own group/institution looking bad / incurring a disadvantage. German
Greuss·The little broken dusty bits at the bottom of the box of cereal/bag of chips. Mennonite/Low German
Fuerdai·A (derogatory) term often used in the Chinese media to refer to rich children whose wealth comes primarily from their parents; the second generation of the rich. Chinese
Qualzucht·Lit. agony breeding. The practice of breeding animals in a way that fosters or tolerates characteristics that cause the animals pain, agony, behavioural disorders etc. German
Naqqaṭat·Literally it dotted it is said after a rain so little that the raindrops just made dots on the sand. Arabic
Stam·Closest equivalent is the just in just kidding or just another. Adverb or adjective meaning for no specific reason or purpose/pointless/generic. Hebrew
Ewiggestriger·Someone who is forever stuck in yesterday and desperately clings to an outdated world view. German
Sturmfrei·When all the people you live with are gone for a while and you have the whole place to yourself. German
Antidisestablishmentarianism·The movement to prevent revoking the Church of England's status as the official church. English