公こう約やく

noun, noun or participle which takes 'suru', transitive verb, noun which may take the genitive case particle 'no'

public pledge; campaign promise; official commitment

Refers to a formal promise made to the public, especially by politicians or organizations. Often used in political contexts for election pledges, but can apply to any public-facing commitment.

• 市し長ちょうは選せん挙きょ中ちゅうに減げん税ぜいを公こう約やくした。

  The mayor pledged a tax cut during the election campaign.

• その党とうは公