Antonyms of bashful :
Examples of usage:
They were all good- looking, but shy and bashful to a degree I never before witnessed. "Three Months in the Southern States, April-June 1863", Arthur J. L. (Lieut.-Col.) Fremantle.
And with that he springs a bashful smile. "Torchy, Private Sec.", Sewell Ford.
So if anyone wants to do his business, there's no call to be bashful about it. "The Satyricon, Complete", Petronius Arbiter.