मन्तव्यmantavyaa.To be thought, considered, or regarded.
साधुरेव स मन्तव्यः सम्यग्व्यवसितो हि सः ॥
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.