just about Definition

just²
adverb

1. Exactly; precisely.

Thesaurus: precisely, exactly, accurately, correctly, perfectly, rightly.
2. A short time before.

Example: He had just gone
3. At this or that very moment.

Example: was just leaving
Thesaurus: presently, now, at this moment, right now, just now.
4. And no earlier, more, etc.

Example: only just enough
5. Barely; narrowly.

Example: The bullet just missed his ear
Thesaurus: barely, hardly, scarcely, by very little.
6. Only; merely; simply.

Example: just a brief note
7. colloq
Used for emphasis.
Example: That's just not true
8. colloq
Absolutely.
Example: just marvellous

Idiom: just about

Almost.
Example: I'm just about ready

Idiom: just about to do something

On the point of doing it.

Idiom: just a minute (just a second etc)

An instruction to wait a short while.

Idiom: just as well

Fortunate; lucky.
Example: It's just as well you came

Advisable.
Example: It would be just as well to wait

Idiom: just in case

As a precaution.

Idiom: just now

At this particular moment.

Idiom: just so

A formula of agreement.

Neat and tidy.
Example: They like everything just so

Idiom: just then

At that particular moment.

In the next moment.

Idiom: just the same

Nevertheless.

Idiom: not just yet

Not immediately, but soon.

Etymology: 14c: from Latin justus right or proper.