Noun: guestimate ges-tu-mut or 'ges-tu,meyt
Usage: informal
- An estimate that combines reasoning with guessing
"Without precise data, the analyst made a guestimate of the project's cost";
- guesstimate [informal], educated guess
Usage: informal
- Estimate based on a calculation
"The engineer guestimated the project would take about six months";
- guesstimate [informal]
Derived forms: guestimating, guestimates, guestimated
Type of: approximate, approximation, estimate, estimation, gauge, idea, judge