Meet 速 in words for speed and quick movement. Learn each reading with a whole word.
The idea
速 has 10 strokes; follow the linked diagram. 速い is はやい, while 速度, 高速 and 速達 use そく in compounds. 速く modifies a verb.
| Word | Reading | Meaning |
|---|---|---|
| 速い | はやい | fast |
| 速度 | そくど | speed |
| 高速 | こうそく | high speed |
| 速達 | そくたつ | express mail |
Examples
- この列車は速いです。This train is fast.
- 彼女は速く走ります。She runs fast.
- 速度を落としてください。Please reduce your speed.
- 高速バスで旅行しました。We travelled by express bus.
- 手紙を速達で送りました。I sent the letter by express mail.
- 川が速く流れています。The river flows swiftly.
Read-aloud uses a synthetic Japanese voice available on your device. Voice quality and availability vary; it does not assess your pronunciation.
No Japanese device voice is available. You can still read the text and use the linked listening resources.
Watch out
速い describes speed; 早い usually means early in time. Both are read はやい, so choose the kanji from the meaning.
Try it yourself
Write the reading of 速い in hiragana.
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はやい
速い is はやい: the train is fast. Learn the adjective with its ending.
Write the reading of 速度 in hiragana.
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そくど
速度 is そくど, meaning speed; the sentence asks someone to slow down.
Choose the missing kanji: ＿達（そくたつ）［速／早］.
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速
速 completes 速達（そくたつ）, express mail. 早 is used for early time.
Practice round
Answer questions, then rebuild Japanese sentences where available. We keep your score.
Write the reading of 速い in hiragana.
Write the reading of 速度 in hiragana.
Choose the missing kanji: ＿達（そくたつ）［速／早］.
Tap the words in the right order.
Tap the words in the right order.
Tap the words in the right order.
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Write 速 following the diagram, then cover the table and use 速い or 速度 in a sentence.