What does 'just about' mean?

[Justy]

English Language Tests, Intermediate level

ESL/EFL Test #187 "Idioms and expressions with 'just': 'just about', 'just before'", question 9

The bill that Congress has produced is monstrous in ......... every way.

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

English Language Tests, Intermediate level

ESL/EFL Test #187 "Idioms and expressions with 'just': 'just about', 'just before'", answer 9

The bill that Congress has produced is monstrous in just about every way.

Correct answer: (d) just about
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I need explanation on the meaning of "just about"

[Mister Micawber]

.
just about = almost
.
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Native English teacher at Mister Micawber's