Francie had heard swearing since she had heard words. Obscenity and profanity had no meaning as such among those people. They were emotional expressions of inarticulate people with small vocabularies; they made a kind of dialect. The phrases could mean many things according to the expression and tone used in saying them. So now, when Francie heard themselves called lousy bastards, she smiled tremulously at the kind man. She knew that he was really saying, “Goodbye—God bless you.
Betty  Smith, A Tree Grows in Brooklyn
emotion, swear-words, swearing