ingratiating

她那谄媚的笑容和不断奉承的话语让人觉得不自在。

Her ___ingratiating grin and constant flattery made people feel uneasy.

他带着讨好的笑容送上一份礼物，但那姿态显得过于刻意。

He presented a gift with an ___ingratiating smile, but the gesture felt too calculated.