空腹|くうふくkuufuku[0]heiban (flat)

1. na-adjective, no-adjectiveempty stomach; hunger
   その食事しょくじで彼かれは空腹くうふくを満みたした。↗

   The meal satisfied his hunger.

• Synonymすきっ腹すきっぱらCasualColloquial term for having an empty stomach, as in 「すきっ腹に酒」; more casual than 「空腹」.
• Synonym空き腹すきはらCasualColloquial word for an empty stomach; means the same as 「すきっ腹」 but is seen less often.
• Related飢えうえWrittenWritten word for hunger from lack of food, also famine, as in 「飢えに苦しむ」; 「空腹」 only says the stomach is empty.
• RelatedペコペコCasualColloquial mimetic word for being ravenous, as in 「お腹ペコペコ」; has a cute, playful feel.
• RelatedハングリーNeutralLoanword for hunger as craving, as in 「ハングリー精神」; usually about mental or spiritual hunger, not the stomach.
• Related腹ペコはらぺこCasualColloquial way to say you are hungry, as in 「腹ペコだ」; more casual than 「空腹」.
• RelatedひもじいCasualColloquial adjective for feeling uncomfortably hungry; carries a slightly old-fashioned flavor.
• Related空腹感くうふくかんNeutralThe felt sensation of hunger itself; tends to come up in medical or dieting contexts.
• Antonym満腹まんぷくNeutralAntonym: a full stomach or eating one's fill — the opposite of empty-stomach 「空腹」.
• Antonym飽食ほうしょくWrittenWritten word for eating one's fill or gorging; by extension, living with plenty of food — the opposite of 「空腹」.

Default to 「空腹」 for an empty stomach, as in 「空腹時に服用」. In casual speech 「お腹が空いた」 or 「腹ペコ」 is more natural; 「飢え」 is for hunger from lack of food or famine. The opposite of 「空腹」 is 「満腹」.

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

1. 腹はらが空あくこと。すきばら。