Definition of Guesstimate:

  1. An estimate based on a mixture of guesswork and calculation.

  2. Form an estimate of based on guesswork and calculation.

  3. Approximation based on a mixture of broad assumptions and computations.

Synonyms of Guesstimate

Estimate, Calculate, Approximate, Make a guess at, Make an estimate of, Hypothesis, Theory, Prediction, Postulation, Conjecture

Meaning of Guesstimate & Guesstimate Definition