fakefriendliness
nounUK /ˌfeɪkˈfrendlinəs/
US /ˌfeɪkˈfrendlinəs/
Being nice to someone in a way that is not real.
Her fakefriendliness made everyone feel uncomfortable at the party.
OTHER MEANINGS
2. A show of warmth that hides unfriendly feelings.
His fakefriendliness disappeared as soon as the boss left the room.
3. Polite behavior used to get something from someone.
The salesman's fakefriendliness was obvious to everyone.
4. Acting like a friend without really being one.
I could see through her fakefriendliness right away.