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
3. to serve as an apology or justification for; justify: Ignorance of the law excuses no one. 4. to release from an obligation or duty: to be excused from jury duty. 5. to seek or obtain exemption or release for (oneself): to excuse oneself from a meeting.