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
Definition of prove for English Language Learners. : 1  to show the existence, truth, or correctness of (something) by using evidence, logic, etc. : 2  to show that (someone or something) has a particular quality, ability, etc. : 3  to turn out to be.