IPA: /nɒnˈpɜːfɔːməns/
KK: /nɑnˈpɜrˌfɔrməns/
A situation where someone does not fulfill their duties or obligations, especially in a legal or formal context.
The company faced penalties due to its nonperformance of the contract terms.
Nonperformance → It is formed from "non-" (meaning not) and "performance" (from Latin "performare", meaning to carry out or accomplish). The word "nonperformance" refers to the state of not carrying out or accomplishing something as expected.
Think of 'not' ('non-') doing something that is supposed to be 'carried out' ('performare') — that's why nonperformance means failing to accomplish a task.