Vagar vs. vaguear vs. errar vs. perambular
Portuguese offers several verbs for "to wander," ranging from the poetic to the strictly physical. While vagar and vaguear focus on aimlessness, errar holds a literary tone of being lost, and perambular describes the specific physical act of walking around.
Vagar
C1To roam freely, drift, or linger without a specific destination or time limit. It is often used in poetic contexts and can apply to abstract concepts like thoughts, gazes, or feelings, as well as physical movement.
Deixou o pensamento vagar por memórias antigas.
(He let his thoughts wander through old memories.)
Uma neblina fina parecia vagar sobre o lago.
(A thin mist seemed to drift over the lake.)
Sem ter o que fazer, decidiu vagar pela praia.
(Having nothing to do, she decided to wander along the beach.)
Vaguear
B2Very similar to vagar, meaning to ramble or roam without a fixed course. However, vaguear is slightly more active and is used more frequently to describe the physical action of people or animals moving around aimlessly.
O cachorro abandonado costuma vaguear pelo bairro.
(The abandoned dog usually roams around the neighborhood.)
Gostamos de vaguear pelas ruas de Paris sem mapa.
(We like to wander the streets of Paris without a map.)
Eles passaram a tarde a vaguear pelo shopping.
(They spent the afternoon wandering around the mall.)
Errar
C2While most commonly used to mean "to make a mistake," in the context of movement, errar implies wandering like a vagabond, straying, or roaming without a home. It is a formal or literary term often associated with being lost, exiled, or seeking something in vain.
O herói da história errou pelo mundo em busca de redenção.
(The story's hero wandered the world in search of redemption.)
Refugiados foram forçados a errar pelo deserto.
(Refugees were forced to roam through the desert.)
Erramos pelas matas escuras até encontrar o caminho.
(We wandered through the dark woods until we found the path.)
Perambular
C1To walk through or about a place; to amble or stroll. Unlike the others, perambular emphasizes the physical act of walking on legs, usually within a defined area like a city, a building, or a neighborhood.
Os turistas perambularam pelo centro histórico o dia todo.
(The tourists strolled around the historic center all day.)
O médico viu o paciente perambular pelos corredores do hospital.
(The doctor saw the patient wandering the hospital corridors.)
Gosto de perambular pelas livrarias no fim de semana.
(I like to browse/wander through bookstores on the weekend.)
Summary
Use vagar for a drifting, slow, or abstract wandering (like thoughts). Use vaguear for the general physical act of roaming without a destination. Choose errar for literary or dramatic contexts implying being lost or homeless. Use perambular when describing the specific activity of walking around a city or building.