IPA: //ʌnˈprɒfɪtəbl//
KK: /ʌnˈprɒfɪtəbl/
Not making any money or profit; not beneficial or useful.
The company had to close down because it was unprofitable for several years.
Unprofitable → It is formed from "un-" (meaning not) and "profitable" (from Latin "profitabilis", meaning advantageous or beneficial). The word "unprofitable" means not advantageous or not yielding profit.
Think of 'not' ('un-') being added to 'advantageous' ('profitabilis') — that's why unprofitable means something that does not bring benefits.