1. to no longer be active or successful; to drop out of the situation

1. I've seen a lot of bands split up and fall by the wayside.

2. When Greg had too many groceries to carry at once, he decided to keep what he needed for dinner that night and let the rest fall by the wayside.

3. Larry’s parents told him to look to the future, concentrate on his long-term goals, and let the unimportant things fall by the wayside.

4. Those who fall by the wayside will find it hard to catch up.

5. Many of the students will drop by the way- side and never finish.

2. Lit. to leave a march or procession in exhaustion to recover beside the pathway

1. A few of the marchers dropped by the wayside in the intense heat.