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She knew precisely what she wanted.
She knew exactly what she wanted.
In a precise or exact manner; exactly.
The clock struck precisely at midnight.
The clock struck exactly at midnight.
Use 'precisely' in formal or technical writing to add precision.
From the Latin 'praecisus', meaning 'cut off' or 'brief', and the adverbial suffix '-ly'.
Often used in formal or technical contexts to convey exactness.