Her insinuation into the boss's confidence was achieved through constant praise and attention.

insinuation 是动词 insinuate 的名词形式，由前缀 in-（表示"进入"）和词根 sinuate（"弯曲"）组成，字面意思是"以迂回方式进入"。这里指"通过巧妙暗示或间接方式逐渐获得（信任）"。