desapercibido
B2 · adj
unnoticed, inconspicuous, discreet (without attracting attention)
🤫 des- (un) + apercibido (noticed, perceived) = unnoticed
Spanish apercibir means to perceive or notice. Add the negating prefix des- and you get desapercibido: not perceived. Common in the phrase pasar desapercibido, meaning to go unnoticed.