Sri Matre Namaha
Niṣkrodhā – The One Hundred & Sixty Eighth name in Lalitha Sahasranamam.
Nirgatah krodhah yasyah sa
Who is without anger
Niṣkrodhā : Nish + Krodha = Nishkrodha
Nis (nish) means without / nil and krodha means anger
She is also called so because She is also devoid of hatred which is the root cause of anger
Even at the time of total dissolution (maha-pralayam), the Brahman is without anger. Krishna says in Gita IX.29 ‘none is hateful to me, none is dear to me’. This is one of the qualities of the Brahman. Brahman is like a mirror. Unless you stand before a mirror, you can’t see your image. Unless we are devoted to Her we cannot realize Her grace. Whether we are devoted to Her or not, She is without anger.