Guesstimate

[verb ges-tuh-meyt; noun ges-tuh-mit, -meyt] /verb ˈgɛs təˌmeɪt; noun ˈgɛs tə mɪt, -ˌmeɪt/ Informal.

verb (used with object), guesstimated, guesstimating.
1.
to estimate without substantial basis in facts or statistics.
noun
2.
an estimate arrived at by guesswork.
noun (ˈɡɛstɪmɪt)
1.
an estimate calculated mainly or only by guesswork
verb (ˈɡɛstɪˌmeɪt)
2.
to form a guesstimate of
v.

1902, a blending of guess (v.) and estimate. Related: Guesstimated; guesstimating. As a noun, from 1906.

noun

An approximation based on calculation and guesswork

verb

: Let’s guesstimate a yield of four percent (1934+)

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