(はし)()

はしりだす
verb (godan, intransitive)
to start running; to break into a run
1. to start running; to break into a run
To suddenly begin running. Describes the moment when someone transitions from standing or walking into a running motion.
子供(こども)たちが校庭(こうてい)(はし)()した。
The children broke into a run toward the schoolyard.
信号(しんごう)(あお)になったら(はし)()した。
When the light turned green, I started running.
(かれ)(きゅう)(はし)()して姿(すがた)()えなくなった。
He suddenly started running and disappeared from sight.

CONJUGATION:

  • (はし)()す → (はし)()さない (negative)
  • (はし)()す → (はし)()して (te-form)
  • (はし)()す → (はし)()した (past)

FORMATION:
Compound verb: (はし)る (to run) + ()す (to begin)

The ~()す pattern indicates the beginning of an action. With motion verbs, it emphasizes the moment of transition into that motion.

SIMILAR COMPOUND VERBS:

  • (ある)()す - to start walking
  • (およ)()す - to start swimming
  • ()()す - to jump/rush out
  • (わら)()す - to start laughing
  • ()()す - to start crying

USAGE NOTE:
(はし)()す focuses on the moment of starting to run, while (はし)()る means to run out (of a place).