Select the most appropriate one-word substitution for the given group of words.

A bicycle for two or more people 

Tandem

The most appropriate one-word substitution for "a bicycle for two or more people" is tandem.

• Multicycle can refer to any type of bicycle with multiple wheels, but it is not specifically used to refer to a bicycle for two or more people.
• Motorcycle is a two-wheeled vehicle with an engine.
• Bipedal means having two feet.

The word tandem comes from the Latin word "tander," meaning "together." A tandem is a bicycle that is designed to be ridden by two or more people. The riders sit in tandem, one behind the other, and pedal together. Tandems are often used by couples, families, or friends who want to enjoy a bike ride together.