insidely

From inside +‎ -ly.

insidely (comparative more insidely, superlative most insidely)

1. In an inside or internal manner; internally.
   • 1843, John Warden Robberds, Robert Southey, Sir Walter Scott, A memoir of the life and writings of the late William Taylor:

     You say something outsidely rude and insidely civil about its being my choice to edit; […]

   • 1920, Willard Carver, Psycho-bio-physiology:

     That is mentally—outsidely, but not insidely. You have not relaxed down through your body at all.

   • 1922, Painting & Decorating Contractors of America, National painters magazine:

     Five new members in the Connecticut club were taken on a selling campaign, over the hurdles of a couple of shrewd, hard boiled, insidely informed partners in a paint and wallpaper store — one of the roughest trips the quintet ever […]

   • 1986, Harley Granville-Barker, Eric Salmon, Granville Barker and his correspondents:

     And all it means: yet it begins "outsidely", like any other day; even "insidely" — oh, yes, deep inside one, it is different.

• outsidely

• dilysine, disilyne, lysidine