Learner's definition of ODD
1 [also more odd; most odd]
odder; oddest : strange or unusual : different from what is normal or expected
He has some odd [=peculiar, weird] habits.
She had an odd look on her face.
People would call at odd hours during the night.
She's got a really odd sense of humor.
Some rather odd people used to live in this house.
There was something odd about his story.
It's odd that nobody told me about this before.
That's odd. He was here a minute ago.
That is one of the oddest creatures I have ever seen.
What an odd-looking animal.
They made quite an odd couple. [=they were very different from each other]
He's an odd duck. = (Brit) He's an odd fish. [=he's a very strange person]
2 always used before a noun : happening in a way that is not planned or regular
She kept a stack of magazines that she would read at odd moments.
During the summer, he would do odd jobs for his neighbors to earn extra money.
3 always used before a noun : of different kinds or types
I stopped by the grocery store to pick up a few odd [=miscellaneous] things.
They were selling an odd assortment of candy and jewelry.
a few odd [=random] bits of information
4 always used before a noun : not matched or paired with another thing or person
I folded all the laundry and had one odd sock left.
an odd shoe
The students got into groups of two, and the odd student worked with the teacher.
5 a : not able to be divided into two equal whole numbers
b : marked by an odd number
The numbers 1, 3, 5, and 7 are odd, while 2, 4, 6, and 8 are even.
odd and even numbers
There's an odd number of chairs.
There's a picture on every odd page of the book.
Please do the odd-numbered problems on page 20 of your textbook.
The odd-numbered houses are on the left side of the street.
6 informal : a little more than a particular number — used in combination with a number
the odd man/one out
: the person or thing that is different from the other members of a group