IPA: /ɪɡˈzæktɪŋnəs/
KK: /ɪɡˈzæktɪŋnəs/
The quality of demanding a lot of attention to detail or precision.
Her exactingness in her work ensures that every project is completed to the highest standard.
Exactingness → It is formed from "exact" (from Latin "exigere", meaning to demand or require) and the suffix "-ness" (meaning the state or quality of). The word "exactingness" refers to the quality of demanding a lot or being very strict in requirements.
Think of 'demanding' ('exigere') something with a high standard — that's what 'exactingness' means.