estimate, underestimate and overestimate

estimate

/ˈestɪmeɪt/ verb transtive "to value, esteem,"

to form an idea of the cost, size, value etc. of something, but without calculating it exactly

to estimate the cost/value/number of something
I estimated that three days would be enough for the user story.

estimate
/ˈestɪmət/ noun countable, uncountable
a judgement that you make without having the exact details or figures about the size, amount, cost, etc. of something

to provide/obtain an estimate
My estimate is three weeks.

underestimate verb
/ˌʌndərˈestɪmeɪt/ transitive
to think or guess that the amount, cost or size of something is smaller than it really is

to underestimate the cost of the project
My supervisor told me I underestimated how long the user story would take.

underestimate noun
/ˌʌndərˈestɪmət/
(also underestimation /ˌʌndərˌestɪˈmeɪʃn/ [countable, uncountable])
an estimate about the size, cost, etc. of something that is too low

My guess of 400 proved to be a serious underestimate.
I admitted that 3 days was a serious underestimate.

overestimate

verb

I didn't overestimate the time the user story would cost.

overestimate

noun (also overestimation)

I pretended three weeks was an overestimate.

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estimate, underestimate and overestimate

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