The word "in-terminabilities" refers to the state or quality of being limitless or boundless. It is a term that can be difficult to find synonyms for, but some words that could be used in its place include endlessness, infinity, boundlessness, limitlessness, and immensity. These words all convey the sense of something that has no end or limit, whether in time, space, or potential. Other related words might include eternity, infiniteness, inexhaustibility, and perpetuity. While precise synonyms for "in-terminabilities" may be somewhat rare, the English language is rich with words that express the idea of limitless possibility and potential.