cannily

From canny +‎ -ly.

cannily (comparative more cannily, superlative most cannily)

1. In a canny manner.
   • 1862 September – 1864 April, Anthony Trollope, “Mrs. Dale’s Little Party”, in The Small House at Allington. […], volume I, London: Smith, Elder and Co., […], published April 1864, →OCLC, page 87:

     She had heard of girls who would not speak of their love, arguing to themselves cannily that there may be many a slip between the cup and the lip.