"Derelict" (especially when referring to a person) means:
Neglectful, irresponsible, or failing in duty.
Careless – ❌ Similar in meaning (synonym)
Deserted – ❌ Similar in meaning (often used for places/things)
Attentive – ✅ Opposite in meaning; means responsible, alert, and careful
Negligent – ❌ Synonym of "derelict"
