To suggest or hint something bad or reprehensible in an indirect and unpleasant way. She insinuated that he was not to be trusted.
To maneuver oneself into a position of favor or acceptance by subtle manipulation. He managed to insinuate himself into the group by offering to help with their project.
To insert, introduce, or cause to enter gradually, subtly, or stealthily. The politician insinuated his ideas into the public discourse over time.