unthievishadj.
Etymology: Previous versions of the OED give the stress as: unˈthievish.
the mind > possession > taking > stealing or theft > [adjective] > stealing or inclined to > in sneaking manner > not given to stealing
1858 T. P. Thompson (1859) II. lxxxi. 39 The unthievish portion of mankind.
This entry has not yet been fully updated (first published 1926; most recently modified version published online June 2019).