A guesstimate is an approximateclose to the true value but not completely accurate estimate made by combiningjoining two or more things together into one a guess with some reasoningthinking carefully to reach a conclusion or answer. It can also be used as a verb meaning to estimate roughly or to make an estimate without exact information.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-22. AI assessment; not a guarantee of accuracy.
Pronunciation
AI-generated pronunciation audio (OpenAI).
Accent: General American English
IPA: /ˈɡɛstəmɪt/
Easy pronunciation: GESS-tuh-mit (approximate spelling).
Stress: Stress the first syllable.
Noun meaning a rough estimate made by both guessing and reasoning.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-22. AI assessment; not a guarantee of accuracy.
Guesstimate Meaning
a rough estimate based on both thinking and guessing
Part of speech: noun
Definition: an estimate that combines reasoning with guessing
Example: We don't know the exact number yet, so here's a guesstimate.
Synonyms for this meaning:
- guestimate — Common spelling variant used for the same meaning.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-22. AI assessment; not a guarantee of accuracy.
Other Meanings of Guesstimate
Meaning 2
to estimate something roughly by calculation
Part of speech: verb
Definition: estimate based on a calculation
Example: Can you guesstimate how long the trip will take?
Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-10-22. AI assessment; not a guarantee of accuracy.
Guesstimate Synonyms
Similar Meaning
- guestimate
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-22. AI assessment; not a guarantee of accuracy.
Common Mistakes
- People sometimes write guestimate instead of guesstimate, but both forms refer to the same idea.
- The word can be a noun or a verb, so check the sentence to see which sense is being used.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-22. AI assessment; not a guarantee of accuracy.
Frequently Asked Questions
What does guesstimate mean?
Guesstimate means a rough estimate made by combining a guess with some reasoning.
Is guesstimate a real word?
Yes. It is a common informal word, and guestimate is also used as a spelling variant.
What is a synonym for guesstimate?
Guestimate is the main close synonym or spelling variant in the supplied data.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-22. AI assessment; not a guarantee of accuracy.