It is word used to calm your anger or anxiety. In addition, saying this word during stressful times can lower your blood pressure and calm your heart down.
Ram: WTF I did not get victory royale in Fortnite? I am so stressed. (Then he says the word Ankith which calms him down)
Ram (After saying the word): I am calmed down. Now I know how to get a victory royale because I am Calm. Thank You Ankith!