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
containing an apology or excuse for a fault, failure, insult, injury, etc.: An apologetic letter to his creditors explained the delay. 2. defending by speech or writing. 3. willing or eager to apologize. 4. sorry; regretful.