vast

/ˈvast/

borrowed from Latin vāstus or vastus "devoid of habitation, desolate, dreary," also, "of great size, immense," probably in part continuing Indo-European *hu̯eh-sto- (whence Old High German wuosti "empty, deserted," Old English wēste, Old Irish fás), in part conflated with another base *wast- of uncertain origin

adjective

  1. very great in size, amount, degree, intensity, or especially in extent or range

vast knowledge

enormous immense huge vast gigantic colossal mammoth mean exceedingly large. enormous and immense both suggest an exceeding of all ordinary bounds in size or amount or degree, but enormous often adds an implication of abnormality or monstrousness. huge commonly suggests an immensity of bulk or amount.

noun

  1. a boundless space

the vast of heaven