We found one dictionary that defines the word by the wayside:

General (1 matching dictionary)

1. by the wayside: Merriam-Webster

Phrases: fall by the wayside, drop by the wayside, go by the wayside, fell by the wayside, thrown by the wayside, more... ▸ Words similar to by the wayside ▸ Usage examples for by the wayside ▸ Idioms related to by the wayside ▸ Wikipedia articles (New!) ▸ Words that often appear near by the wayside ▸ Rhymes of by the wayside ▸ Invented words related to by the wayside