IPA: /dɪˈsɪmɪlə/
KK: /dɪˈsɪmɪlər/
Not alike; having differences or distinct characteristics.
The two paintings are dissimilar in style and color.
Dissimilar → It is formed from "dis-" (meaning apart or not) and "similis" (meaning similar or like). The word "dissimilar" means not similar or not alike.
Think of 'not' or 'apart' ('dis-') when you want to remember that 'dissimilar' means things that are 'not alike' or 'not similar'.