1.
early
At an early time.
2.
quickly, fast
At a rapid pace.
早く is the adverbial form of the i-adjective 早い. It covers three related meanings: early (time), quickly (speed), and soon (desire for something to happen).
FORMATION:
早い → 早く (i-adjective → adverb by changing い to く)
KANJI DISTINCTION:
- 早く: early or quickly (time-oriented — covers both meanings)
- 速く: fast, at high speed (purely about speed)
In practice, 早く is used for both senses and is the more common spelling.
COMMON EXPRESSIONS:
NOTE:
早く! on its own works as an urging expression: "Hurry up!"