दुःखेष्वनुद्विग्नमनाः सुखेषु विगतस्पृहः।वीतरागभयक्रोधः स्थितधीर्मुनिरुच्यते॥
duḥkheṣv-anudvigna-manāḥ sukheṣu vigata-spṛhaḥvīta-rāga-bhaya-krodhaḥ sthita-dhīr munir ucyate
Word by word
The verse says
Not shaken by pain, not hungry for pleasure, past attachment and fear and anger — that is what a settled sage is called.
In plain words
Four marks, in two pairs.
Pain does not shake him. Pleasure does not make him grasp. And three things are gone: attachment, fear, anger.
Notice that fear and anger are listed together with attachment. Krishna is treating them as one family.
Where you've felt this · in parenting
A parent whose teenager comes home late. There is no scene, and there is no pretending it was fine either. The conversation happens, and it is about the lateness rather than about how frightened they were.
Going deeper
The grouping is the teaching here. Rāga, bhaya, krodha — attachment, fear, anger — are named in one breath because in the Gita's analysis they are one thing at three stages.
Attachment is holding something as necessary to you. Fear is that holding, looking forward at the possibility of loss. Anger is that holding, meeting an obstacle. Take away the first and the other two have nothing to stand on.
This gets stated as a mechanism at 2.62 and 2.63, a few verses from here. The Gita is unusually interested in how these states produce one another rather than in condemning them.
Anudvigna-manāḥ — a mind not agitated. Again the negative form. Not happy in pain, which would be a lie. Not thrown.
And muni — sage — literally relates to silence. The portrait being drawn is not of someone who has achieved something visible. It is of someone in whom several usual reactions simply do not fire, which from outside looks like almost nothing at all.