That compromises.

1

a. 1850.  Calhoun, Wks. (1874), II. 6. A compromising spirit, always ready to yield a part to save the residue.

2

1883.  Athenæum, 22 Dec., 817/3. The offending sheet was cancelled and another substituted, omitting the compromising words.

3

  Hence Compromisingly adv.

4

1888.  N. Amer. Rev., Feb., 200. He touched it coarsely … but not compromisingly—with unmistakable condemnation.

5