Pathfinder 2 Unnoticed Condition
You can find Conditions Rules here.
If you are unnoticed by a creature, that creature has no idea you are present at all. When you’re unnoticed, you’re also undetected by the creature. This condition matters for abilities that can be used only against targets totally unaware of your presence.
Blinded | Broken | Clumsy | Concealed | Confused | Controlled | Dazzled | Deafened | Doomed | Drained | Dying | Encumbered | Enfeebled | Fascinated | Fatigued | Flat-Footed | Fleeing | Friendly | Frightened | Grabbed | Helpful | Hidden | Hostile | Immobilized | Indifferent | Invisible | Observed | Paralyzed | Persistent Damage | Petrified | Prone | Quickened | Restrained | Sickened | Slowed | Stunned | Stupefied | Unconscious | Undetected | Unfriendly | Unnoticed | Wounded