adjective
odd
AHD/ɑːd/
Different from what is usual or expected.
The open orange umbrella looks odd among the closed gray umbrellas.

Etymology
An additional unit leaves something unpaired: the odd one out. This image developed into the sense of something strange or peculiar, standing apart from what is usual.
In context
an odd accent pattern would be any pattern that was in some way unusual
More examples
- She heard an odd noise beneath the floor.
- His explanation seemed odder than the event itself.
- It was the oddest shape in the collection.
Forms
odd · odder · oddest
oddity noun — Something unusual.