instruction:
Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.
question:
Is there a word which has this definition: usage of vulgar or abusive words too often especially while chatting or talking to someone or while giving a speech. What do you call a person who uses abusive words too often without needing to.
answer:
Two adjectives come to my mind for a person who uses excessive foul language: 1) crass having or showing no understanding of what is proper or acceptable; rude and insensitive 2) vulgar (as you used in the title of your own question) not having or showing good manners, good taste, or politeness. Both of these suggestions are more reflective of the person's demeanor or temperament than the cursing itself, but I think they could be more colorful (pun intended) alternatives. I hope this is helpful to you!


question:
Suppose I tell something to my companion and I want to make sure he understands me. I thought I may simply ask 'Do you understand me?'. But recently I heard that in such cases I should ask 'Does that make sense?' instead. Is this true? Which option is appropriate to use in business communication?.
answer:
'Do you understand me?' slightly carries the implication that it is your fault if you do not understand. 'Does it make sense?' carries the implication that it is my fault if you do not understand. So politeness suggests that the latter is better.


question:
I have just seen an email containing the phrase 'Without further adieu'; I always thought it was 'Without further ado.' Which is it?.
answer:

The common idiom is, 'Without further ado.' The words at play here are ado: fuss, esp. about something that is unimportant And adieu: another term for goodbye