3 words starting with Z

• zeal noun

  great energy and eagerness for a cause or goal

  The volunteers cleaned the riverbank with zeal.

  Like enthusiasm, passion, fervor

• zealous adjective

  showing great energy and eagerness for a cause or goal

  The zealous gardener checked her tomato plants every hour.

  Like enthusiastic, passionate, devoted

• zenith noun

  the highest point of something; the point in the sky directly overhead

  At noon, the sun is close to its zenith.

  Like peak, summit, high point