reflexive

US /rɪˈflek.sɪv/
UK /rɪˈflek.sɪv/
"reflexive" picture
1.

denoting a pronoun or verb form that refers to the subject of the sentence or clause in which it stands

:
In 'She taught herself to play the piano,' 'herself' is a reflexive pronoun.
Many verbs in Spanish are reflexive, like 'lavarse' (to wash oneself).
2.

acting or done in response to a stimulus without conscious thought

:
The doctor checked her reflexive eye movements.
His reaction was purely reflexive, a sudden jerk.