approximately

Từ điển Oxford Advanced Learner 8th

ap·proxi·mate·ly 7 AW BrE [əˈprɒksɪmətli] NAmE [əˈprɑːksɪmətli] adverb
used to show that sth is almost, but not completely, accurate or correct
• The journey took approximately seven hours.
• The two buildings were approximately equal in size.

Thesaurus:
approximately [approximately] adv.
•The trip takes approximately seven hours.
roughly • • about • • around • • round about • • something like • • more or less • • imprecisely •
Opp: exactly

Vocabulary Building:
Ways of saying approximately
The flight takes approximately three hours.
The tickets cost about £20 each.
The repairs will cost $200, give or take a few dollars.
How much will it cost, more or less?
We are expecting thirty or so people to come.
She must be 25 or thereabouts.
Profits have fallen by roughly 15%.
You can expect to earn round about £40,000 a year.
The price is somewhere around $800.
She earns somewhere in the region of £25,000.
All these words and phrases are used in both speaking and writing; about is the most common and approximately the most formal.