This is the 12519th most frequent Portuguese word.
sutil
Delicate, subtle, or understated.
Here, 'sutil' describes the aroma as not being strong or overpowering, but rather pleasing in its delicacy.
O perfume tinha um aroma sutil que agradava a todos.
The perfume had a subtle aroma that pleased everyone.
In this context, 'sutil' highlights the discreet and tactful nature of the critique, implying it was made delicately without causing offense.
Ele fez uma crítica sutil ao projeto durante a reunião.
He made a subtle critique of the project during the meeting.
Here, 'sutil' refers to the barely noticeable distinction between the two shades, emphasizing its fineness and slightness.