"just about" = "almost"?

[Marina]

English Language Tests, Intermediate level

ESL/EFL Test #187 "Idioms and expressions with just: just about, just before", question 4

Jack Wheeler is ......... the most interesting man I know.

(a) just over
(b) just then
(c) just about
(d) just as

English Language Tests, Intermediate level

ESL/EFL Test #187 "Idioms and expressions with just: just about, just before", answer 4

Jack Wheeler is just about the most interesting man I know.

Correct answer: (c) just about

Your answer was: incorrect
Jack Wheeler is just as the most interesting man I know.
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I don't get that "just about".
Is it like an "almost"?

Thank you.
Marina

[Mister Micawber]

.
You are just about right. The dictionary definition is 'imprecise but fairly close to correct'.
.
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Native English teacher at Mister Micawber's