How do you say "open" in Japanese?

In Japanese, "open" is 開いた (aita). It is a adjective pronounced "ah-ee-tah".

Listen to the pronunciation:

Pronunciation

開いた is written in kanji and hiragana. Romanised as aita, it sounds roughly like "ah-ee-tah" to an English ear.

Example sentence

窓が開いています。

Mado ga aite imasu.

The window is open.

Usage notes

Aita (開いた) is the past-participle form of aku (to open). In practice, Japanese speakers often say aite imasu (is in an open state) to describe something currently open, as this sounds more natural than aita desu.

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Questions about 開いた

How do you pronounce 開いた?

開いた is romanised as aita. Say it roughly like "ah-ee-tah" in English. Each Japanese syllable has even weight, so keep the rhythm steady.

Is 開いた formal or casual?

開いた is a na-adjective or noun-adjective. It is neutral in register and fits naturally in both casual and polite sentences. Add na before a noun, or use desu for a polite predicate.

How is 開いた written in Japanese?

開いた is written using kanji and hiragana. Kanji characters carry the core meaning; any hiragana or katakana that follow show grammatical endings.

This word is part of the vocabulary taught in the Japanese language learning game Noun Town, where words are introduced through play rather than memorisation.