How to say "backpack" in Japanese

Choosing the right word

リュックサックCommon
nounCovers the everyday 'backpack' sense, with a nuance leaning toward rucksack. Often shortened in casual speech, and a typical choice when talking about school or hiking bags.
彼女かのじょは背中せなかにリュックサックを背せおっている。↗
She is carrying a backpack on her back.
ナップザックCommon
nounAlso covers the 'backpack' sense via its knapsack and rucksack glosses. The nuance leans toward a knapsack, so it suits contexts like hiking or travel packs as well as everyday use.

Both words are common terms for a carried bag; 「リュックサック」 evokes a rucksack-style pack, 「ナップザック」 a knapsack, and either is acceptable for 'backpack'.

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

Japanese equivalents

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