Meanings
nounguesstimation (countable and uncountable, plural guesstimations)
plural guesstimations
- countablederogatoryuncountableAn estimation made without good justification and often biased.
- countableuncountableEstimation based on guesses, usually for expedience or because no better method is available.
The following analysis will allow future critical commentary, both academic and popular, to move away from speculation, guestimation, hedging, generalisation, and erroneous statements.
2018, James Lambert, “Setting the Record Straight: An In-depth Examination of Hobson-Jobson”, in International Journal of Lexicography, volume 31, number 4, →DOI, page 487
Origin
Blend of guess + estimation.
Full word history & related roots →Cite this entry
APA
guesstimation. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/guesstimation
MLA
“guesstimation.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/guesstimation. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “guesstimation,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/guesstimation.
Source: guesstimation on Wiktionary, CC BY-SA 4.0.