estimation

/ˌɛstəˈmeɪʃən/
noun
  1. A rough calculation or judgment of the value, number, quantity, or extent of something.
    • According to my estimation, we will arrive in two hours.
    • The contractor gave us an estimation for the cost of the new roof.
    • My estimation of the crowd size was about 500 people.
  2. An opinion or judgment about someone or something, especially regarding their worth or character.
    • The teacher's estimation of the student's abilities proved accurate.
    • In my estimation, she is the best candidate for the job.
    • His estimation of the team's chances was overly optimistic.