IPA: /nɒnˈkrɪtɪkəl/
KK: /nɑnˈkrɪtɪkəl/
Not essential or important; not having a significant impact or effect.
The meeting discussed noncritical issues that could wait until next week.
Noncritical → It is formed from "non-" (meaning not) and "critical" (from Greek "kritikos", meaning able to judge). The word "noncritical" means not able to judge or not involving a critical situation.
Think of 'not' ('non-') being combined with 'able to judge' ('kritikos') — that's why noncritical means something that is not judged as important.