IPA: /ˈvæstɪtjuːd/
KK: /væstɪtud/
A very large or immense extent or size; the quality of being vast.
The vastitude of the ocean is awe-inspiring.
Vastitude → It is formed from "vastus" (from Latin, meaning empty or vast) and the suffix "-tude" (meaning state or condition). The word "vastitude" refers to the state of being vast or immense.
Think of 'vast' meaning large or empty, and remember that 'vastitude' describes the condition of being very large or expansive.