unfrankadj.
(un- prefix1 1.)
ΘΚΠ
the mind > mental capacity > knowledge > secrecy, concealment > [adjective] > disposed to secrecy, secretive > of speech, opinion, etc.
uncandid1681
unfrank1861
1861 S. Brooks Silver Cord IV. xxvi. 143/1 Impertinent curiosity, and..unfrank conversation.
This entry has not yet been fully updated (first published 1924; most recently modified version published online June 2019).
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adj.1861