In the present state of knowledge of PHYSICS there is no answer to the basic question, ‘what is TIME'. Perhaps there is another way of saying the same thing, i.e. there are multiple answers to this single question, viz., time is a concept, a dimension, an entity (irrespective of whether physical or non-physical or metaphysical) or just an illusion. Going by preponderance of probability it seems Time is a metaphysical entity. We are unable to unravel its mystery because our quest begins and ends with physics. Worse still we consider any talk of metaphysics as unscientific bunkum. I nevertheless foresee the day when physics shall aspire to penetrate the boundaries of metaphysics. It is only then we can expect some definite answer to the question WHAT IS TIME.