若さ|わかさwakasa

1. nounyouth; youthfulness

• Synonym若々しさわかわかしさNeutralYouthful vigor or freshness, said of looks or state of mind; 「若さ」 is more about youth as an age and the drive that comes with it.
• Antonym老いおいWrittenOld age or the process of growing old, the direct opposite of 「若さ」; belongs to written and formal prose.

Use 「若さ」 for youth itself and the vigor or impulsiveness of being young, as in 「若さゆえの過ち」 and 「若さを保つ」. For a youthful look or spirit—freshness that persists despite age—pick 「若々しさ」. 「老い」 is its opposite: old age.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 若わかいこと。
2. 若者わかものが持もっている新鮮しんせんさ、元気げんき。
3. 未熟みじゅくであること。