Bottomlessly is used to describe something that is endless or immeasurable. It is an adverb, and some synonyms for this word include boundlessly, infinitely, endlessly, and limitlessly. These words all convey the idea of a vast expanse or amount without measure. Other synonyms for bottomlessly include unconstrained, unchecked, and unlimited. These words suggest a lack of limitations or boundaries and the idea of being unrestricted. Words such as fathomless, unfathomable, and immeasurable also relate to the idea of bottomlessly, suggesting that something cannot be measured or comprehended due to its vastness or unimaginable nature.