IPA: /ˈruːmɪli/
KK: /ˈrumɪli/
In a way that is spacious or has plenty of room.
The living room was arranged roomily, allowing for easy movement and comfort.
Roomily → It is formed from "room" (from Old English *rum*, meaning space or area) and the suffix "-ily" (meaning in a manner). The word "roomily" means in a manner that provides ample space or comfort.
Think of the word 'room' which suggests space, and remember that 'roomily' describes something done in a spacious or comfortable way.