insincerity
US /ˌɪn.sɪnˈser.ə.t̬i/
UK /ˌɪn.sɪnˈser.ə.t̬i/
1.
sự không thành thật
the action or practice of pretending to feel something that you do not really feel, or not meaning what you say:
:
•
There’s often a bit of insincerity in these speeches.