What does 適性 mean?
適性 is a Japanese noun meaning “aptitude” in English. It is written as 適性 in kanji, てきせい in hiragana, and tekisei in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
天才とは忍耐に堪え得る偉大な適性に外ならぬ。
Genius is nothing but a great aptitude for patience.