A mob will immediately despawn if ever there is no player within 128 blocks of it.
Source: wiktionary
Despawn
/diːˈspɔːn/
Synonyms for "despawn"
Ranked by relevance and common usage.
Sample sentences
3 total sentences available.
The helicopter despawned shortly after take-off, leaving the player in an unexpected free fall.
Source: wiktionary
The game despawns the enemies after you kill them 15 times or so.
Source: wiktionary