Significados de unpleasant connotation em inglês

It conjured up, dimly, some unpleasant connotation.

After the enlightening remark that the word "Atheist" carries with it an unpleasant connotation, he says:-

Moreover, popular suspicion and hostility became aroused, and the word "trust" began to acquire something of the unpleasant connotation which it later possessed.