表層形
一たん
イッタン
副詞
一たん (イッタン)
Ittan · いったん — once; for a short time, briefly, temporarily
Other ways to say “once” in Japanese →
一たん in rōmaji: ittan.
副詞
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📝 一旦 🔤 * 📐 *
Updated: 2026年8月10日
📖 Grammar Information
| 表層形 (Surface) |
一たん
|
|---|---|
| 見出し語 (Lemma) |
一旦
|
| 読み (Reading) |
イッタン
|
| 品詞 (POS) |
副詞・*・*・*
|
| 活用型 (Conj. Type) |
*
|
| 活用形 (Conj. Form) |
*
|
| 表記 (Orthography) |
一たん
|
| 読み・基本形 |
イッタン
|
| 表記・基本形 |
一たん
|
| 見出し語の読み |
イッタン
|
💡 English Meaning
一たん means “once; for a short time, briefly, temporarily” — full definition & examples →
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一たん
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Reading & Info
イッタン
Lemma: 一旦
副詞***
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💡
Did you know · 副詞
副詞 (adverbs) modify verbs, adjectives and other adverbs. Unlike English, Japanese adverbs don't change form — they're invariable.
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❓ About this entry
What is the difference between surface form and lemma? ▼
The surface form (一たん) is the exact text as it appeared in the corpus — it may be conjugated or inflected. The lemma (一旦) is the dictionary base form. For example, 食べた (surface) has the lemma 食べる.
What does the reading (pron) field mean? ▼
The reading shows the pronunciation in hiragana or katakana as recorded by UniDic. For kanji entries this is the standard reading of this specific surface form — which may differ from other readings of the same kanji.
What is UniDic? ▼
UniDic is a comprehensive Japanese lexicon developed by the National Institute for Japanese Language and Linguistics (NINJAL). It provides detailed morphological information for modern Japanese words, used in NLP tools like MeCab.
How do I save this entry? ▼
Click the ★ save button in the word card above (you need to be logged in). Saved entries appear in your personal Saved Dictionary page for quick review later.