烈 (readings: れつ, はげ; Japanese kanji) means “Ardent / Violent / Vehement / Furious”. It is a Jōyō kanji taught in Japanese secondary school (junior & senior high) — the 高手 · Master tier beyond the grade 1–6 Kyōiku set, and appears in words such as 激烈 (violent).
What does 烈 mean?