Odd duck

This lad Kelley is an odd duck in many ways. . . . Unlike most college youngsters, he has no hobbies.

If you are a married woman over 45 and are thinking of taking a plunge into the job market bear in mind that you won't be an odd duck in the employment pool.

Is [Peter] O'Toole—skinny, tottering, eccentric in everything from costume to line-readings—wonderful in this role? Indeed he is. Always more of an odd duck than a leading man, age (he's 74) has given him license to play his essential weirdness.