feigned kindness; pretending to be kind for self-serving reasons
Describes an act or attitude that appears kind on the surface but is actually motivated by self-interest, self-aggrandizement, or a desire to look good. Often used critically.
彼の親切ごかしな態度にはうんざりだ。
I'm fed up with his feigned kindness.
それは親切ごかしの申し出に過ぎない。
That's nothing more than an offer made under the pretense of kindness.