In Japanese, “launch” can be called 発射（はっしゃ） when it means launching something like a rocket, or 開始（かいし）/売り出す（うりだす） when it means starting or launching a product or service.

Common Japanese forms

  • 発射（はっしゃ） = launch, especially for rockets or missiles.
  • 開始（かいし） = start, begin, launch of a project or activity.
  • 売り出す（うりだす） = to launch/sell a product.
  • 発売（はつばい） = product launch, release.

Quick note

If you mean “launch” as a rocket launch , the best word is 発射. If you mean “launch” as in launching a new product , people often use 発売 or 売り出す.

TL;DR: “Launch” in Japanese is usually 発射（はっしゃ） for rockets, and 開始 / 売り出す / 発売 for products or projects.