Guestimates

Part of speech: noun

Definitions

1. An informal estimate that is based on conjecture rather than precise calculation
2. A rough approximation derived from speculation and assumptions rather than verified data
3. A calculation made with limited information often relying on intuition and educated guesses

Etymology: "Guestimate" is a blend of "guess" and "estimate," and it arrived in American English in the early twentieth century, with the first recorded uses appearing around the 1930s to 1940s. Its exact coiner is not firmly documented, so the origin is best described as a deliberate informal clipping-and-merging of two existing words rather than a traceable invention by one person. The "guess" part comes from Middle English "gessen," probably from Old Norse roots, while "estimate" descends from Latin "aestimare," meaning to value or assess. Blending the two gave speakers a single word that combined a casual guess with the more formal idea of a numerical judgment. The result is a playful, slightly self-deprecating term, useful when someone wants to admit that a figure is more hunch than calculation.

Synonyms: estimates, approximations