Definition of guesstimate in US English:

guesstimate

(also guestimate)

noun

Pronunciation /ˈɡestəmət//ˈɡɛstəmət/
informal
  • An estimate based on a mixture of guesswork and calculation.

    • ‘Some guesstimates put the true figure as high as 8%.’
    • ‘But these are sophisticated guesstimates, no more.’
    • ‘Most of these numbers, if not all of them, are guesstimates, as it were.’
    • ‘To this day, I have only received three reports that are nothing more than estimates and guesstimates, but little scientific analysis of the water quality or content.’
    • ‘The numbers may well amount to little more than guestimates, however, because the government isn't yet collecting data.’
    • ‘The gross city product, for one thing, is not some precise state or federal government statistic, but a rough, inexact index of economic activity, a sort of guesstimate built upon multiple other guesstimates.’
    • ‘Mercer's figures are, in our opinion, guesstimates at best.’
    • ‘This is the best deal we can offer and this is our best guestimate.’
    • ‘Using a variety of sources, they put together a good guestimate of what the UNSC will hear.’
    • ‘My guesstimate is that the positives will outweigh the negatives, but that progress will be much slower than it could be with better policies.’
    • ‘There were plenty of guesstimates but, without the basic information, all subsequent valuations of the company were not worth the paper they were written on.’
    • ‘Based on guesstimates of the likely renewed whale stock, this could mean Norway raising its annual catch from 550 minkes to 2,000, and possibly extending the hunting to other species.’
    • ‘Existing guesstimates are extracted and extrapolated from hospital and mortuary records, media reports and some military data.’
    • ‘We're quite confident about the first list but the rest are just guesstimates.’
    • ‘This too seems to be based on what may roughly be termed a guesstimate, with no consideration of the negativities.’
    • ‘Well I think in any disaster situation the figures are rubbery and they're guesstimates at best.’
    • ‘Finally, I'm doing the guesstimates based on what I believe will be reported on a couple of these films.’
    • ‘The guestimate of the duration assigned to an average male generation is only one statistical gap through which the carts of future study might be driven.’
    • ‘Continuing, the chairman said that tourist numbers and tourism revenue were not crude guesstimates but rather solid projections based on the experience of comparable host ports in other countries.’
    • ‘However, his guestimates of the cost of war put the Australian bill at $25m a day.’
    hypothesis, theory, prediction, postulation, conjecture
    View synonyms

verb

[with object]
Pronunciation /ˈɡɛstəˌmeɪt//ˈɡestəˌmāt/
informal
  • Form an estimate of based on guesswork and calculation.

    ‘the task is to guesstimate the total vote’
    • ‘By the way, although we certainly weren't hating our sleeping arrangements, we guesstimated that tossing two sleeping bags and a tent onto our racks would have been easy.’
    • ‘Okay, there is a growth in the Spanish carp fishing fraternity at the moment but it's still guestimated there are way less than a thousand serious guys.’
    • ‘American fatalities are guesstimated at under 6000.’
    • ‘Judging from the detail level, I'd guesstimate this is about 50 metres across.’
    • ‘I'm really not very good at guesstimating the times that I'll race.’
    • ‘Since the best quality is even more important from their point of view, you can safely let them do the choosing and purchasing, and I'm sure they'll be able to correctly guesstimate the size you'll need as well.’
    • ‘The point is that I guesstimate the box office every weekend based on a combination of both tracking and my intuition, personal insights, etc, etc, etc.’
    • ‘Myself, I would guesstimate the difference between the two measurements, and then err slightly on the smaller side.’
    • ‘Organisers guesstimated some 4,400 were in attendance.’
    • ‘They are guesstimating the winds to be blowing around 60-70 knots.’
    • ‘I would guesstimate this to be about a 3 hour job.’
    • ‘During time trials, I try to guesstimate what the margin of victory is going to be, especially if the car in the other lane is similar to what I'm racing in performance.’
    • ‘I hazard to guesstimate the total this year but it'll probably be even more crowded, especially when I'm waiting in line to eat.’
    • ‘Surely some of these performers, we'd guesstimated, would hanker to wield a radical version of the ideological cannon that something called ‘country music’ regularly exploits in the interests of defense contractors and capital.’
    • ‘But when 10 forensic clinicians were asked to guestimate the size of 10 test objects their performance was no better than 13 participants from another profession.’
    • ‘He was tall, she guesstimated around 6 feet or so.’
    • ‘She had sort of guesstimated from their combined moods, the atmosphere one might call it, that this sort of behavior was to be expected.’
    • ‘I'm guesstimating the asking price was $2-3M. It would be surprising if they paid any more than that.’
    • ‘He was born in 1855, so, by roughly guestimating his age in the picture, I'd say that it was taken in about 1890.’
    • ‘In 1997 the illegal pool of guns available to criminals was guesstimated at somewhere between 10,000 and 25,000.’
    estimate, calculate, approximate, make a guess at, make an estimate of
    View synonyms

Origin

1930s: blend of guess and estimate.

Pronunciation

guesstimate

Noun/ˈɡɛstəmət/

guesstimate

Verb/ˈɡɛstəˌmeɪt/