Marty is gregarious, unlike his brother who is quiet and shy.

Although some men are loquacious, others hardly talk at all.

Rather than be involved in clandestine meetings, they did everything quite openly.

The feral cat would not let us pet him, unlike our friendly cat.

Lucinda is very adroit on the balance beam, but Constance is rather clumsy.

Sweet syrup and delicious strawberry juice are used to conceal the acrid taste of the medicine.

Some city dwellers are affluent, others live in poverty.

Unlike Kyle, who is a conformer and a follower, Jeremy is a maverick.

The children were as different as day and night. He was a lively conversationalist, but she was reserved and taciturn.

This painting of the landscape is picturesque, while the one of the old house is just plain ugly.