This is the 14035th most frequent Spanish word.
sutil
Subtle.
Here, 'sutil' is used to describe a gentle and delicate characteristic of the aroma, implying it's pleasant and not overpowering.
El perfume tiene un aroma sutil que no resulta abrumador.
The perfume has a subtle aroma that is not overwhelming.
In this case, 'sutil' indicates something done delicately or without explicitness, suggesting finesse and nuance in expressing emotion.
Con una sutil mirada, dejó entender lo que sentía.
With a subtle glance, they conveyed how they felt.
Here, 'sutil' is applied to intellectual or abstract qualities, referring to an understated or cleverly concealed characteristic of the irony.