たちまち

たちまち
adverb
instantly; in no time; at once
1. instantly; in no time; at once
Describes something happening very quickly or immediately, often with a sense of surprising speed.
たちまち人気(にんき)()た。
It became popular in no time.
(そら)がたちまち(くら)くなった。
The sky suddenly turned dark.
(うわさ)はたちまち町中(まちじゅう)(ひろ)まった。
The rumor spread throughout the town in no time.
(あたら)しい(みせ)開店(かいてん)するとたちまち行列(ぎょうれつ)ができた。
As soon as the new store opened, a line instantly formed.
(あめ)()()すと、公園(こうえん)にいた(ひと)たちはたちまちいなくなった。
When it started to rain, the people in the park disappeared in no time.

KANJI:
Can be written as (たちま)ち, though hiragana is more common.

USAGE:
たちまち emphasizes the surprising speed at which something happens. It often describes changes, spread of information, or completion of actions that occur faster than expected.

COMMON PATTERNS:

  • たちまち〜になる (to instantly become ~)
  • たちまち(ひろ)まる (to spread in no time)
  • たちまちのうちに (in the blink of an eye)

REGISTER:
Neutral to slightly literary. Used in both spoken and written Japanese.

SIMILAR WORDS:

  • すぐに - immediately (neutral, most common)
  • あっという()に - in the blink of an eye
  • (またた)()に - in an instant (literary)
  • 即座(そくざ)に - immediately (formal)