1. Stop trying or participating; admit defeat
   "In the second round, the challenger fell by the wayside";
   - drop out, give up, drop by the wayside, throw in, throw in the towel [informal], quit, chuck up the sponge [US, non-standard]

Derived forms: falling by the wayside, falls by the wayside, fallen by the wayside, fell by the wayside

Type of: break, break off, cease, discontinue, give up, lay off, quit, stop, surcease [archaic]

Antonym: enter