1) An infinite quantity 2) Large indefinite amount 3) Large indefinite quantity 4) The quality of being infinite 5) Without bound or limit Found on https://www.crosswordclues.com/clue/infinitude
• (n.) Boundless number; countless multitude. • (n.) Infinite extent; unlimited space; immensity; infinity. • (n.) The quality or state of being infinite, or without limits; infiniteness. Found on http://thinkexist.com/dictionary/meaning/infinitude/
In·fin'i·tude noun 1. The quality or state of being infinite, or without limits; infiniteness. 2. Infinite extent; unlimited space; immensity; infinity. 'I am who fill infinitude .' Milton. « As pleasing to the fancy, as speculations of eternity or infinitude... Found on http://www.encyclo.co.uk/webster/I/54