Definition of "credibly"

He [Mayor Koch] says he better understands the limits of government; less credibly, he says he has mellowed.

1989, The New York Times Magazine‎, page 38

His deep-set eyes and expression of general despair lend him a look of utter dissolution—very credibly, he is dying from sexual desire.

1997, Vanity Fair‎, volume 60, page 95

Perhaps less credibly she assumes that, as a necessary consequence of this move from the public space of the theatre to the private space of the closet, 'the emphasis shifted to subjective interpretation'

2003, Stanley Wells, Shakespeare Survey‎, number 51, page 132

In his eyes, if he allowed things to continue as before, he would be little better than a male prostitute. All too credibly, he could imagine himself aging into the superannuated gigolo of ]uvenal's satire.

2009, Anthony Everitt, Hadrian and the Triumph of Rome‎, page 289

Perhaps, and more credibly, he meant that, had he been at the department, he would have ensured that the president expressly cleared that instruction.

2013, Frank W. Brecher, American Diplomacy and the Israeli War of Independence‎, page 171