A more thorough explanation:

MAL GREE

Mal gree (mal gree). [Law French “against the will”] Hist. Against the will; without consent.

Mal gree means doing something without someone's permission or against their will. For example, if someone takes your phone without asking you, they are taking it mal gree. Another example is if someone enters your house without your permission, they are entering mal gree.

• He took the money mal gree.
• She kissed him mal gree.
• The company used his image mal gree.

These examples illustrate the definition of mal gree because in each case, someone did something without the other person's consent or against their will.