Amen

interjection
  1. A word used at the end of a prayer or statement to express solemn ratification or agreement. interjection
    The congregation responded with a resounding 'amen' after the prayer.
    He ended his speech with 'amen' to signify his strong agreement with the cause.
  2. An expression of strong agreement or approval. noun
    When she proposed the new plan, everyone in the meeting said 'amen' to show their support.
    His suggestion to take a break was met with a unanimous 'amen' from the tired team.