LINK / CITE ADD TO WORD LIST. noun. The definition of availability is whether someone or something can be accessed or used. An example of availability is when a classmate can meet to discuss a project on a certain date.
excuse - a defense of some offensive behavior or some failure to keep a promise etc.; he kept finding excuses to stay; every day he had a new alibi for not getting a job; his transparent self-justification was unacceptable
1. used as a noun. An excuse is a reason that you give in order to explain why something has been done, has not been done, or will not be done. They are trying to find excuses for their failures. There is no excuse for this happening in a new building. You say that someone makes an excuse. I made an excuse and left the meeting early.