Definition of just about

• (of actions or states) slightly short of or not quite accomplished; "the job is (just) about done"; "the baby was almost asleep when the alarm sounded"; "were almost finished"; "the car all but ran her down"; "he nearly fainted"; "talked for nigh onto 2 hours"; "the recording is well-nigh perfect"; "virtually all the parties signed the contract"; "I was near exhausted by the run"; "most everyone agrees"
• (of quantities) imprecise but fairly close to correct; "lasted approximately an hour"; "in just about a minute"; "hes about 30 years old"; "Ive 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"