Boundlessness is a concept that refers to something that is limitless or without boundaries. It is often used to describe the vastness of the universe, or the power of love. The crossword solutions for the term boundlessness are INFINITY (8 letters) and ETERNITY (8 letters). INFINITY is a mathematical concept that refers to something that has no end or limit, while ETERNITY is a philosophical concept that refers to an infinite amount of time. Both terms are often used to describe the boundlessness of the universe.