IPA: /ˈrʌmli/
KK: /rʌmli/
In a strange or odd way.
The cat looked at me rumly, as if it understood my thoughts.
This word originates from Old English, meaning a state of being rum or spacious. The term 'rumly' describes something that is spacious or roomy.
Think of 'rum' meaning spacious, and remember that 'rumly' describes a state of being spacious.