Frequency: The word is one of the 3000 most common words in English.
1.
You use ~ to emphasize that something is the case, or to emphasize the strength of your intention or opinion.
I’m ~ going to get in touch with these people...
‘I think the earlier ones are a lot better.’—‘Mm, ~.’
= certainly
ADV: ADV before v, ADV with cl/group emphasis
2.
If something has been ~ decided, the decision will not be changed.
He told them that no venue had yet been ~ decided.
ADV: ADV before v