It is a suspicion of the motives of a good deed which will often poison all the good effect from it.

I don't know where the taint came from.

Perhaps the Pilgrim Fathers', being necessarily always on the watch for the savage behind his gifts, have affected their descendants.

Anyway, it is there.

I suppose I have it." "I am very sorry," said Ellen.
"I also am sorry," said Cynthia.