Negligenciar vs. descuidar vs. descurar
While negligenciar, descuidar, and descurar can all mean to neglect, they differ in register and nuance. Negligenciar is formal and implies failing a specific duty. Descuidar suggests a lapse in attention or lack of personal upkeep, often used reflexively. Descurar is a slightly more literary term referring to a lack of dedication or abandoning the cultivation of something.
Negligenciar
B2This implies a failure to perform a duty or obligation. It carries a more serious, formal, or even legal tone, suggesting that someone actively ignored a responsibility they were supposed to fulfill.
O governo não pode negligenciar a saúde pública.
(The government cannot neglect public health.)
O médico foi acusado de negligenciar os sintomas do paciente.
(The doctor was accused of neglecting the patient's symptoms.)
Eles decidiram negligenciar os avisos de segurança.
(They decided to neglect the safety warnings.)
É crime negligenciar os cuidados a um idoso.
(It is a crime to neglect care for an elderly person.)
Descuidar
B1This conveys a sense of carelessness, distraction, or letting one's guard down. It defines a lack of vigilance or maintenance. It is frequently used reflexively (descuidar-se) to mean stopping self-care or making a mistake due to a momentary lack of interaction.
Ele descuidou-se da aparência após perder o emprego.
(He neglected his appearance after losing his job.)
Se você descuidar do jardim, as ervas daninhas vão crescer.
(If you neglect the garden, the weeds will grow.)
A motorista descuidou-se por um segundo e bateu o carro.
(The driver neglected the road (got distracted) for a second and crashed the car.)
Não deves descuidar a tua alimentação durante as férias.
(You should not neglect your diet during the holidays.)
Descurar
C1This is a slightly more formal or literary word. It refers to failing to cultivate, attend to, or treat something with the necessary dedication. It is often applied to abstract concepts, studies, or details that require ongoing effort.
Ele começou a descurar os estudos no último semestre.
(He started to neglect his studies in the last semester.)
A equipe não pode descurar os detalhes técnicos do projeto.
(The team cannot neglect the technical details of the project.)
Nunca deves descurar as amizades antigas.
(You should never neglect old friendships.)
O atleta acabou por descurar o treino físico.
(The athlete ended up neglecting his physical training.)
Summary
Use negligenciar for serious failures of duty or professional obligations. Use descuidar for carelessness, lack of maintenance, or moments of distraction (often regarding oneself). Use descurar for a lack of dedication to learning, training, or ongoing projects, particularly in formal or written contexts.