kook
odd fellow
odd fish
queer bird
queer duck
odd man out

His orders had been to make the best time possible to meet this odd fellow, who would have more orders for him.

For that reason, people who exercised unusual trades joined together to form a larger group of "odd" fellows.

The odd fellows lodge members in the area attended meetings at Linby.

"Croucher's an odd fellow but he knows his job."

Jenny has to admit the odd fellow is "like no one else."

No one is sure but a certain odd fellow named Visbhume is thought to be responsible.

Its sole occupant is, at 74, one truly odd fellow, as he readily acknowledges.

What did you do with an odd fellow who knew more about the country and its people than you did?

The pilot seemed such an odd fellow that the captain asked if he knew the river well.

He is an odd fellow who often talks to himself and is afraid to look you in the eyes.