Synonyms for Just about:

adv

almost (adverb)
close to, well-nigh, all but.
nearly (adverb)
approximately.

adv.

almost (adverb)
nigh, most, virtually, roughly.
approximately (adverb)
more or less, almost.
just about (adverb)
all but, around, nigh, about, nearly, well-nigh, close to, approximately.
nearly (adverb)
some, nearly.
round (adverb)
near.

n.

just about (noun)
approximately, almost, nearly, roughly, some, nigh, around, or so, close to, all but, most, about, near, more or less, well-nigh, virtually.

Other synonyms:

Other relevant words:
approximately, nigh, about.