IPA: /ˈjuːzəblɪ/
KK: /ˈjuːzəblɪ/
In a way that can be used or is practical for use.
The software was designed to work usably on various devices.
Usably → It is formed from "use" (from Old French *user*, meaning to utilize or employ) and "-able" (meaning capable of). The word "usably" means in a manner that is capable of being used or utilized.
Think of 'use' as being able to 'employ' something, and '-able' means capable of. So, usably means something that can be used effectively.