のびのび・伸び伸びnobinobi[3]nakadaka (mid-high)

1. adverb (with と), suru verbcomfortably; peacefully; freely; with one's mind at ease; without restraint; calmly; without worries; in a relaxed manner; in a carefree manner
   子こどもはのびのび育そだつべきだ。↗

   Children should grow up carefree.
2. adverb (with と), suru verb(growing) quickly

• Synonym心置きなくこころおきなくNeutralEmphasizes having no worries or reservations, as in 「心置きなく楽しむ」; 伸び伸び describes the relaxed, unrestrained manner itself.
• Synonym自由にじゆうにNeutralFocuses on the absence of restrictions or constraints; 伸び伸び instead paints the state of being relaxed and free, growing or acting naturally.
• Related存分にぞんぶんにNeutralMeans doing something fully, to one's heart's content, as in 「存分に楽しむ」; it stresses degree, while 伸び伸び stresses a relaxed, easy manner.
• Antonym窮屈きゅうくつNeutralAntonym: cramped, stiff or constrained; it describes feeling hemmed in, the opposite of the easy, unrestrained 伸び伸び.
• Antonym縮こまるちぢこまるNeutralAntonym: to curl up or huddle from nervousness or fear — the opposite of the relaxed, stretched-out manner of 伸び伸び.

Use 「伸び伸び」 for acting or growing in a relaxed, unrestrained way, as in 「伸び伸びと育つ」 or 「伸び伸びプレーする」. For doing something without reservations say 「心置きなく」, for doing it to the full 「存分に」; the opposite is 「窮屈」.

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

1. すくすく伸のびるさま。
2. 落ち着おちついてのんびりするさま。