Wiktionary
adv. In an ingratiating manner.
WordNet
adv. in a flattering and ingratiating manner; "she behaves ingratiatingly toward her boss"
in a pleasingly ingratiating manner; "she smiled ingratiatingly"
Usage examples of "ingratiatingly".
He had a nervous habit of wriggling ingratiatingly and now, all the time he was talking, he seemed to be making surreptitious attempts to stroke his calves by leaning over backwards to get at them.
Makar Alexeevich came twice that evening shuffling along in his galoshes as far as the door and stopped and looked ingratiatingly at Pierre.
The Shamud sized him up quickly, and before Jondalar could attempt to say anything, smiled ingratiatingly, stepped aside, and waved him on with an exaggerated graceful gesture, acquiescing to the tall, powerful man.
The commissionaire at the Piccadilly entrance of the restaurant touched his hat ingratiatingly, with the smug confidence of a man who is accustomed to getting sixpence a time for doing it.