IPA: /stjuːˈpɛndəsnəs/
KK: /stjuːˈpɛndəsnəs/
The quality or state of being extremely impressive or amazing.
The stupendousness of the fireworks display left everyone in awe.
Stupendousness → It is formed from 'stupendus' (from Latin, meaning to be amazed or astonished) and '-ness' (a suffix used to form nouns indicating a state or condition). The word 'stupendousness' refers to the state of being astonishing or amazing.
Think of the Latin root 'stupendus' which means to be amazed, and remember that 'stupendousness' describes the state of being truly astonishing.