1. An estimate made with limited information; a rough guess based on incomplete data.
Usage: informal; blend of 'guess' and 'estimate'

1. To make a rough estimate or educated guess, typically with incomplete information.
Usage: informal; third-person singular present or plural

Examples

• The contractor gave us guestimates for the renovation costs before doing a full inspection.
• She guestimates that the project will take about three weeks to complete.
• Without access to the full data, we can only provide guestimates of the market size.
• He guestimates the crowd at around 5,000 people, though it could be more.
• The budget includes several guestimates because we don't have final vendor quotes yet.
• They guestimates the travel time at two hours, but traffic could change that.