guesstimate: meaning, definition, pronunciation and examples
mediuminformal, colloquial, business jargon
Quick answer
What does “guesstimate” mean?
An estimate based on a mixture of guesswork and calculation, often due to incomplete information.
Audio
Pronunciation
Definition
Meaning and Definition
An estimate based on a mixture of guesswork and calculation, often due to incomplete information.
An informal approximation used when precise data is unavailable, typically in planning or forecasting contexts.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. The word itself is originally American but is now fully integrated into British English.
Connotations
Informal, slightly self-deprecating. In business contexts, it may be used to soften the presentation of uncertain figures.
Frequency
Slightly more common in American English, but widely understood and used in the UK.
Grammar
How to Use “guesstimate” in a Sentence
give [someone] a guesstimate of [something]make a guesstimateguesstimate [that] clauseguesstimate [something] at [figure]Vocabulary
Collocations
Examples
Examples of “guesstimate” in a Sentence
verb
British English
- Can you guesstimate the attendance for the webinar?
- I'd guesstimate the repairs will cost around two hundred quid.
American English
- We need to guesstimate the budget before the meeting.
- He guesstimated the crowd size at over five thousand.
adjective
British English
- We worked from a guesstimate timeline.
- She provided some guesstimate figures for the proposal.
American English
- The guesstimate cost was way off.
- We only have guesstimate numbers at this stage.
Usage
Meaning in Context
Business
Used in meetings and planning when discussing budgets, timelines, or sales forecasts without full data.
Academic
Generally avoided in formal writing. May appear in informal discussions about research feasibility or resource needs.
Everyday
Used for informal planning, e.g., guessing costs for a home project or the number of guests at a party.
Technical
Discouraged in fields requiring precision (engineering, hard sciences). Acceptable in some software development for initial time/cost scoping.
Vocabulary
Synonyms of “guesstimate”
Neutral
Vocabulary
Antonyms of “guesstimate”
Watch out
Common Mistakes When Using “guesstimate”
- Using in formal reports.
- Spelling as 'guessimate' (though this variant exists, 'guesstimate' is standard).
- Pronouncing with a hard /g/ as in 'guest'. The /g/ is soft as in 'get'.
FAQ
Frequently Asked Questions
Yes, it is a recognized blend word (portmanteau) in modern dictionaries, though it remains informal.
An estimate is based on some data and analysis, while a guesstimate relies more on intuition and guesswork due to a lack of information.
Yes, commonly. E.g., 'We need to guesstimate the costs.'
Generally, no. It is considered too informal. Use 'approximation', 'rough estimate', or 'speculative projection' instead.
An estimate based on a mixture of guesswork and calculation, often due to incomplete information.
Guesstimate is usually informal, colloquial, business jargon in register.
Guesstimate: in British English it is pronounced /ˈɡɛstɪmət/, and in American English it is pronounced /ˈɡɛstəˌmeɪt/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “in the ballpark (of a guesstimate)”
Learning
Memory Aids
Mnemonic
Think: 'I GUESS I'll have to ESTIMATE' -> GUESSTIMATE. It's a guess dressed up as an estimate.
Conceptual Metaphor
NAVIGATION WITHOUT A MAP (proceeding with incomplete information).
Practice
Quiz
In which context is using 'guesstimate' MOST appropriate?