Approximately - English editing.

(1) Imprecise but close to correct or exact (in quantity or amount):

Approximately is mainly used in formal written styles: ‘The accident occurred approximately at 9 am.’ ‘This new drug lasts approximately an hour.’ ‘It is estimated that approximately 47,000 cars were stolen in the London area last year.’

Unless you wish to sound formal, use about, nearly, around or roughly.

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