His adulatory remarks surprised us.

Answer: Option C

Discreet : careful and prudent in one's speech or actions, especially in order to keep something confidential or to avoid embarrassment.
Insulting : disrespectful or scornfully abusive.
Appreciate : be grateful for (something).
Funny : causing laughter or amusement; humorous.
Adulatory : excessively praising or admiring.

Synonym of Adulatory is Appreciate