русня

рус- (rus-) +‎ -ня (-nja) or Русь (Rusʹ) +‎ -ня (-nja).

This slur was coined during the Second Chechen War by the Chechen terrorist Shamil Basayev in analogy of the name Чечня́ (Čečnjá), as the -ня suffix was seen by him as derogatory for referring Chechens as a mob.

• IPA^(key):

русня́ • (rusnjá) f inan (genitive русни́, uncountable)

1. (collective, ethnic slur, offensive) Russia

   уехал из русни

   ujexal iz rusni

   left Russia

   А это отрывок из интервью Басаева в Интернете (ведь не секрет, что в Интернете есть сепаратистские сайты). «Если лечиться, то лучше в Русне ― дешевле и качественнее», ― продолжает свои откровения Басаев. Для самых сообразительных поясняю, что Русня ― это мы с вами. - Ольга Бакушинская, «Рецепты доктора Басаева», ноябрь 2004 г., «Комсомольская правда»

   A eto otryvok iz intervʹju Basajeva v Internete (vedʹ ne sekret, što v Internete jestʹ separatistskije sajty). «Jesli lečitʹsja, to lučše v Rusne ― deševle i kačestvenneje», ― prodolžajet svoi otkrovenija Basajev. Dlja samyx soobrazitelʹnyx pojasnjaju, što Rusnja ― eto my s vami. - Olʹga Bakušinskaja, «Recepty doktora Basajeva», nojabrʹ 2004 g., «Komsomolʹskaja pravda»

   And this is an excerpt from an interview with Basayev on the Internet (it is no secret that there are separatist sites on the Internet). "If you need treatment, it is better to go to Russia - cheaper and better quality," Basayev continues his revelations. For those who know the most, I will explain that "Rusnya" is us and you. - Olga Bakushinskaya, "Recipes of Doctor Basayev", November 2004, "Komsomolskaya Pravda"

2. (collective, ethnic slur, offensive, by extension) Russians, Russkis

• ру́сский (rússkij) (regular, neutral; ethnic Russian, n.)

• россия́нин (rossijánin) (regular, neutral; Russian citizen, n.)

• русня́вый (rusnjávyj)

• → Ukrainian: русня́ (rusnjá)

• росня́ (rosnjá) (alternative spelling, internet slang)

Borrowed from Russian русня́ (rusnjá). Also can be analysed as рус- (rus-) +‎ -ня (-nja). Popularised initially by far-right nationalists in Ukraine in opposition to the pro-Russian militants in eastern Ukraine. Later popularized again during the 2022 Russian invasion of Ukraine.

• IPA^(key):

русня́ • (rusnjá) f inan (genitive русні́, uncountable)

1. (slang, derogatory, collective, offensive, ethnic slur) Russia
2. (slang, derogatory, collective, offensive, ethnic slur) Russians, Russkis

   Йо́бана русня́!

   Jóbana rusnjá!

   Those fucking Russians!

   Шо там по русні́? А русні́ - пизда́!

   Šo tam po rusní? A rusní - pyzdá!

   How are the Russians doing? The Russians are fucked up!

• росія́нин (rosijányn, “a Russian person”) (neutral)
• каца́п (kacáp), кацапня́ (kacapnjá), моска́ль (moskálʹ) (ethnic slur, offensive)

• білорусня́ (bilorusnjá) (Belarusians)
• йбн рсн (jbn rsn) (short for "йоба́на русня́", "those fucking Russians")
• русня́вий (rusnjávyj) (related to Russia or Russians)
• русня́вський (rusnjávsʹkyj)