If an event is due to something, it happens or exists as a direct result of that thing.
You can say due to to introduce the reason for something happening. Some speakers of English believe that it is not correct to use due to in this way.
If something is due at a particular time, it is expected to happen, be done, or arrive at that time.
Due attention or consideration is the proper, reasonable, or deserved amount of it under the circumstances.
Something that is due, or that is due to someone, is owed to them, either as a debt or because they have a right to it.
If someone is due for something, that thing is planned to happen or be given to them now, or very soon, often after they have been waiting for it for a long time.
Dues are sums of money that you give regularly to an organization that you belong to, for example a social club or trade union, in order to pay for being a member.
Due is used before the words 'north', 'south', 'east', or 'west' to indicate that something is in exactly the direction mentioned.
If you say that something will happen or take place in due course, you mean that you cannot make it happen any quicker and it will happen when the time is right for it.
You can say 'to give him his due', or 'giving him his due' when you are admitting that there are some good things about someone, even though there are things that you do not like about them.