“young” in Japanese is 若, read jaku, nyaku, waka (じゃく, にゃく, わか). It is a Grade 6 Kyōiku kanji, taught in year 6 of Japanese elementary school, and appears in words such as 若者 (young person).
What does 若 mean?
母はまだ若く見える。
Same sound, different character — the classic trap. Compare them side by side: