1.
You use ~ to emphasize that you are referring to your, or someone else’s, true beliefs or feelings.
But did you ~ think we wouldn’t notice?
ADV: ADV before v emphasis
2.
You use ~ to emphasize that you are telling the truth and that you want people to believe you. (SPOKEN)
Honestly, I don’t know anything about it...
ADV: ADV with cl emphasis
3.
You use ~ to indicate that you are annoyed or impatient. (SPOKEN)
Honestly, Nev! Must you be quite so crude!...
= really
ADV: ADV with cl feelings
4.
see also honest