IPA: /nɒn.kənˈkʌr.ənt/
KK: /nɑnˈkɒŋkərənt/
Not happening at the same time; occurring separately or at different times.
The two events were nonconcurrent, so I could attend both without any conflict.
Nonconcurrent → It is formed from "non-" (meaning not) and "concurrere" (from Latin, meaning to run together). The word "nonconcurrent" describes events or actions that do not occur at the same time or do not run together.
Think of 'not' ('non-') running together ('concurrere') — that's why nonconcurrent means things that do not happen at the same time.