exactly
/ɪɡˈzæktli/
precisely
I know exactly what you mean.
I completely understand your point.
formal
In a precise or exact manner; precisely.
The clock struck exactly 3:00 PM.
The clock struck precisely 3:00 PM.
Word Origin
From Latin 'exactus', past participle of 'exigere', meaning 'to demand or require'.
English Dictionary