IPA: /ˈæmplnəs/
KK: /ˈæmplnəs/
The quality of being large, spacious, or sufficient in amount.
The ampleness of the room allowed for a large gathering of guests.
Ampleness → It is formed from "ample" (from Latin "amplus", meaning spacious or large) and the suffix "-ness" (meaning the state or quality of). The word "ampleness" refers to the state of being ample or having a large extent.
Think of 'ample' meaning spacious or large, and remember that 'ampleness' describes the quality of being spacious.