Quick Reference

Meaning & Definition

Oishii is the single most-used word at a Japanese dinner table — the instinctive verbal reaction to a first bite that doubles as both compliment to the cook and personal expression of pleasure.

Oishii (美味しい) is an i-adjective meaning delicious, tasty, or good-tasting. It applies to any food or drink that pleases the palate: a bowl of ramen, a sip of sake, a piece of fruit at its peak ripeness. The intensity can be adjusted with adverbs — totemo oishii (very delicious), sugoku oishii (incredibly good) — or the casual exclamation oishii! on its own, which functions exactly like ‘yum!’ or ‘this is amazing!’ in English. An older, more formal alternative is umai (旨い/うまい), which men especially use in casual speech. Umai can also mean ‘skilled’ or ‘good at something,’ creating a useful double meaning.

How to Use It

Saying oishii after your first bite is not just polite — it is expected. Eating in silence at a Japanese meal, especially with the person who cooked, can feel like you didn’t enjoy the food. You don’t need to say it every bite, but that first reaction matters. Also note that oishii is an i-adjective, so it conjugates: oishikatta (it was delicious), oishikunai (not delicious), oishisou (looks delicious — used before you’ve tasted it).

Kanji Breakdown

The kanji 美味しい combines 美 (bi / utsukushii — beautiful) and 味 (mi / aji — taste/flavor). Together they literally suggest ‘beautiful taste,’ which is poetic: the word encodes the idea that a truly delicious flavor is a form of beauty. The 美 character also appears in 美術 (bijutsu, fine art) and 美容 (biyou, beauty care), reinforcing its aesthetic meaning.

Example Sentences

Cultural Context

Food reaction culture in Japan has its own vocabulary that goes beyond oishii. Television food reporters coined and popularized phrases like umai! with exaggerated reactions, creating a whole performance genre around tasting. The phrase oishii kao (美味しい顔 — literally ‘delicious face’) refers to the expression someone makes when they eat something they truly enjoy, and food brands and restaurants actively seek this reaction in advertisements.

The seasonal dimension of oishii is deeply cultural. Japanese food philosophy emphasizes shun (旬) — the peak season of an ingredient — and an ingredient eaten in-season is expected to be oishii in a way it cannot be at other times. Saying that spring bamboo shoots or autumn chestnuts are oishii in season connects to a broader appreciation for transience and natural cycles, themes woven through Japanese aesthetics.

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