What does 炎上 mean?
炎上 is a Japanese noun meaning “going up in flames; destruction by fire (esp. of a large building)” in English. It can also be translated as “stirring up a storm of criticism online (of an article, tweet, statement, etc.)” depending on context. It is written as 炎上 in kanji, えんじょう in hiragana, and enjou in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
家は炎上していた。
The house was in flames.