Which preposition to use with tactless

of Occurrences 2%

'Oh, Laurie dear,' my aunt cried, 'how tactless of me.

beyond Occurrences 1%

Unless Montagu were tactless beyond the general, the position as regards himself and Lord Dorchester must indeed have been hopeless before he inspired the paper in the Tatler on settlements.

Which preposition to use with  tactless