The term 'long-ago time' can be summed up with the word 'PAST', which is a four letter word. The PAST is a period of time that has already happened and is no longer present. It is often used to refer to a time that was long ago, such as centuries or even millennia ago. The PAST is an important concept in history, as it allows us to learn from our mistakes and understand how our world has changed over time.