All related terms of 'I know'

I have an idea

You can use far in expressions like ' as far as I know ' and ' so far as I remember ' to indicate that you are not absolutely sure of the statement you are about to make or have just made, and you may be wrong .

You say ' I know the feeling ' to show that you understand or feel sorry about a problem or difficult experience that someone is telling you about.

You say ' Not that I know of ' when someone has asked you whether or not something is true and you think the answer is 'no' but you cannot be sure because you do not know all the facts .

You can say ' I don't know about you ' to indicate that you are going to give your own opinion about something and you want to find out if someone else feels the same.

You use I don't know in expressions which indicate criticism of someone's behaviour . For example , if you say that you do not know how someone can do something, you mean that you cannot understand or accept them doing it.

You can use expressions such as you know what I mean and if you know what I mean to suggest that the person listening to you understands what you are trying to say , and so you do not have to explain any more.

You can use I don't know to indicate that you do not completely agree with something or do not really think that it is true .

You use ' I know ' to express sympathy and understanding towards someone.

People sometimes use expressions such as I'm blessed if I know or damned if I know to emphasize the fact that they do not know something.