IPA: //ʌnˌsaɪənˈtɪfɪk//
KK: /ʌnˌsaɪənˈtɪfɪk/
Not following the rules or methods of science; lacking scientific knowledge or approach.
The theory was criticized for being unscientific and not based on evidence.
Unscientific → It is formed from "un-" (meaning not) and "scientific" (from Latin "scientia", meaning knowledge). The word "unscientific" means not based on or not conforming to scientific principles or methods.
Think of 'not' ('un-') being added to 'knowledge' ('scientific') — this helps you remember that 'unscientific' refers to something that lacks scientific knowledge or methods.