frank
US /fræŋk/
UK /fræŋk/

1.
open, honest, and direct in speech or writing, especially when dealing with unpalatable matters
:
•
To be frank, I don't think that's a good idea.
•
She was very frank about her feelings.
1.
a signature or mark on a letter or parcel indicating that postage has been paid or is not required
:
•
The senator's mail was sent with a frank.
•
He applied a frank to the package before mailing it.