1. if someone falls by the wayside, they fail to finish an activity.

A lot of students fall by the wayside during their first year at university.

2. if something falls by the wayside, people stop doing it, making it, or using it.

Many new drugs fall by the wayside in the laboratory.

• have share of something
• have shit for brains
• have sights set on
• have sights set on doing something
• have sights set on something
• have someone by the balls
• have someone by the short and curlies
• have someone dead to rights
• have someone down on like a ton of bricks
• have someone down on you like a ton of bricks
• have someone in corner
• have someone in sights
• have someone in stitches
• have someone in the palm of hand
• have someone in the palm of your hand
• have someone in your corner
• have someone in your sights
• have someone on a short leash
• have someone on a string
• have someone on a tight leash
• have someone on hand
• have someone on hands
• have someone on the run
• have someone on your hands
• have someone over a barrel