IPA: //ˌʌnɪˈstæblɪʃt//
KK: /ʌnɪˈstæblɪʃt/
Not having been set up or recognized; lacking a firm foundation or status.
The unestablished company struggled to gain clients and build a reputation.
Unestablished → It is formed from "un-" (meaning not) and "establish" (from Old French *establir*, meaning to set up or make stable). The word "unestablished" means not set up or not made stable.
Think of 'not' ('un-') having something 'set up' ('establish') — that's why unestablished means something that is not yet set up.