believablyadv.
/bᵻˈliːvəbli/, U.S. /bəˈlivəbli/, /biˈlivəbli/ In a believable manner, credibly.
ΘΚΠ
the mind > mental capacity > belief > belief, trust, confidence > credibility > [adverb]
credibly1425
credently?a1579
creditably1646
believably1865
1865 S. S. Hennell Present Relig. I. v. 478 What there is that has now been rendered believably evident in the very Actuality of things.
1923 N.Y. Times Bk. Rev. 25 Nov. 9/5 The series of intricate plots are skilfully and believably put together with a sure and practiced hand.
1970 Jrnl. Marketing Res. 7 318/2 The manipulation seems to have succeeded in producing a believably bad coffee around which to structure disconfirmation experiences.
2000 A. Maupin Night Listener (2001) xix. 226 A place so frozen and desolate that a shopping mall at a cloverleaf could believably pass for an arctic weather station.
This is a new entry (OED Third Edition, September 2011; most recently modified version published online December 2021).
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adv.1865