副词

1. (of quantities) imprecise but fairly close to correct

e.g. lasted approximately an hour
in just about a minute
he's about 30 years old
I've had about all I can stand
we meet about once a month
some forty people came
weighs around a hundred pounds
roughly $3,000
holds 3 gallons, more or less
20 or so people were at the party

Synonym: aboutclose tojust aboutsomeroughlymore or lessaroundor so