What does 旺盛 mean?
旺盛 is a Japanese adjective meaning “lively; vigorous; energetic; healthy” in English. It can also be translated as “full of (energy, appetite, curiosity, etc.)” depending on context. It is written as 旺盛 in kanji, おうせい in hiragana, and ousei in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
彼は知識欲が旺盛である。
He is in a rage to know.