若いは英語で
younger

英語の定義

若い
1. adj. young, juvenile
2. adj. energetic, fresh
3. adj. immature
考えが若い - one's thought is immature
4. adj. lesser in an order, smaller, earlier
若い番号 - smaller number
若いイニング - earlier inning
5. adj. Usage: In the sense of "young", this word is only used for young adults, not children.

younger
1. 形容詞. young の比較級。若いほうの。年下のほうの。

younger
1. adj. comparative form of young: more young
Our neighbor spent his younger years in England.
Reading this book takes me back to my younger days.
2. n. (rare) One who is younger than another.

young
1. adj. In the early part of growth or life; born not long ago.
a lamb is a young sheep; these picture books are for young readers
2. adj. At an early stage of existence or development; having recently come into existence.
the age of space travel is still young; a young business
3. adj. (Not) advanced in age; (far towards or) at a specified stage of existence or age.
How young is your dog? Her grandmother turned 70 years young last month.
4. adj. Junior (of two related people with the same name).
5. adj. (of a decade of life) Early.
6. adj. Youthful; having the look or qualities of a young person.
My grandmother is a very active woman and is quite young for her age.
7. adj. Of or belonging to the early part of life.
The cynical world soon shattered my young dreams.
8. adj. (obsolete) Having little experience; inexperienced; unpracticed; ignorant; weak.
9. n. People who are young; young people, collectively; youth.
The young of today are well-educated.
10. n. Young or immature offspring (especially of an animal).
The lion caught a gnu to feed its young.
The lion's young are curious.
11. n. (rare, possibly, nonstandard) An individual offspring; a single recently born or hatched organism.
12. v. (informal, or demography) To become or seem to become younger.
13. v. (informal, or demography) To cause to appear younger.
14. v. (geology) To exhibit younging.