IPA: /nɒnɪˈstæblɪʃt/
KK: /nɑnɪˈstæblɪʃt/
Not set up or recognized; lacking a formal status or foundation.
The nonestablished company struggled to gain clients and credibility in the market.
Nonestablished → It is formed from "non-" (meaning not) and "established" (from Latin "stabilire", meaning to make stable or firm). The word "nonestablished" means not having been made stable or firm, indicating a lack of formal recognition or status.
Think of 'not' ('non-') having been 'made stable' ('established') — that's why nonestablished means something that hasn't been formally recognized or set.