If you behave honestly, you always tell the truth and do not try to deceive people or break the law.
She fought honestly for a just cause and for freedom.
她正直地为正义事业和自由而战。
If you speak or write honestly, you tell the complete truth or give your sincere opinion, even if this is not very pleasant.
It came as a shock to hear an old friend speak so honestly about Ted.
听到一位老朋友如此坦诚地谈论特德真是令人震惊。
You use honestly to emphasize that you are referring to your, or someone else's, true beliefs or feelings.
But did you honestly think we wouldn't notice?
但是你真的认为我们不会注意到吗?
You use honestly to emphasize that you are telling the truth and that you want people to believe you.
Honestly, I don't know anything about it.
我真的对此一无所知。
You use honestly to indicate that you are annoyed or impatient.
Honestly, Nev! Must you be so crude!
天哪,尼夫!你怎么能如此粗暴呢!