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
Your daughter comes home two hours 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 you 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 same holding, looking ahead at the possibility of losing it. Anger is that same holding, meeting an obstacle. Take away the first and the other two have nothing to stand on.
A few verses from here this gets spelled out as a mechanism. The Gita is unusually interested in how these states produce one another, rather than in condemning them.
Anudvigna-manāḥ - a mind not agitated. The negative form again. Not happy in pain, which would be a lie. Just not thrown.
And muni, sage, is a word rooted in silence. What is being drawn is not a portrait of someone who has achieved something visible. It is someone in whom several usual reactions simply do not fire, which from outside looks like almost nothing at all.