Frequency: The word is one of the 3000 most common words in English.
1.
Precisely means accurately and exactly.
Nobody knows ~ how many people are still living in the camp...
The meeting began at ~ 4.00 p.m...
= exactly
ADV: ADV with v, ADV with cl/group
2.
You can use ~ to emphasize that a reason or fact is the only important one there is, or that it is obvious.
Children come to zoos ~ to see captive animals...
ADV: ADV with cl/group emphasis
3.
You can say ‘~’ to confirm in an emphatic way that what someone has just said is true.
‘Did you find yourself wondering what went wrong?’—’Precisely.’
= exactly
ADV: as reply emphasis