Word Study
guestimate
WORDNET DICTIONARY
Noun guestimate has 1 sense
- guestimate(n = noun.cognition) guesstimate - an estimate that combines reasoning with guessing; Array is a kind of approximation, estimate, estimation, idea
OXFORD DICTIONARY
guestimate, n. (also guesstimate) colloq. an estimate based on a mixture of guesswork and calculation.
Etymology
GUESS + ESTIMATE
For further exploring for "guestimate" in Webster Dictionary Online