IPA: /ɪmˌpɛkəˈbɪləti/
KK: /ɪmˈpɛkəˌbɪlɪti/
The quality of being perfect or flawless, without any mistakes or faults.
Her impeccability in her work earned her a promotion.
Impeccability → It is formed from "im-" (meaning not) and "peccare" (meaning to sin or do wrong) combined with the suffix "-ability" (meaning the quality of being able to). The word "impeccability" refers to the quality of being without sin or fault.
Think of 'not' ('im-') doing anything wrong ('peccare') — that's why impeccability means the quality of being faultless.