noncritical has 2 distinct synonyms spread across 2 of its 3 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is critical.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
not critical; not at a point of abrupt change
not in a state of crisis or emergency
marked by disregard for critical standards or procedures
“news sources reflected uncritical estimates of the number of juvenile addicts”
Synonyms, antonyms and the broader and narrower relations for noncritical come from Princeton University’s WordNet. Full sources and licences.