4 adverbs to describe how to ingratiates

The smile was irresistibly ingratiating: Sofia could not but return it.

"Well, he has done me the favor of introducing me to you, anyway," said Prather, who had a remarkably ingratiating smile.

In all other matters he flattered the emperor and ingratiated himself most skillfully, with the result that he received all kinds of gifts, said to have possessed in the aggregate a value of five thousand myriads, and obtained permission to rebuild Artaxata.

The business was done, and the new neighbour, prepossessing in appearance and manners, speedily ingratiated himself with all, and even obtained, by a semblance of hard-working industry, and regular attendance at public worship, seconded by quiet and unobtrusive conduct, the notice and regard of his landlord, Mr. Hamilton.

4 adverbs to describe how to  ingratiates  - Adverbs for  ingratiates