Chastity
Virtue, Fidelity
noun, な adjective
Chastity is always in season so it's always cool to try to keep your chastity. Spring, summer? Doesn't matter. Your decision to stay that way is fine no matter what time of year it is.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
彼女は最後まで貞節を守ったんだ。
She protected her chastity until the end.