IPA: /dɪsˈtɪŋkt.nəs/
KK: /dɪsˈtɪŋktnəs/
The quality of being different or separate from others; uniqueness.
The distinctness of her voice made her stand out in the choir.
Distinctness → It is formed from "distinct" (from Latin "distinctus", meaning distinguished or set apart) and "-ness" (meaning the state or quality of). The word "distinctness" refers to the quality of being distinct or clearly different from something else.
Think of something that is 'set apart' ('distinct') and the '-ness' indicating a state. This helps you remember that distinctness means the quality of being clearly different.