निश्चितniścitaCertainty, decision.
Derived forms and compounds
यच्छ्रेयः स्यान्निश्चितं ब्रूहि तन्मे
कोशःDictionaries
V. S. Apte, The Practical Sanskrit–English Dictionary. Look up any word of the Gita in Devanagari, IAST or Harvard-Kyoto, or browse the headwords letter by letter.