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.
Entry आनन्दिन्
आनन्दिन्ānandina.Happy, joyful, delighted.
[आ-नन्द्-णिनि]
Happy, joyful, delighted.
Pleasing, giving delight. रसह्येवायं लब्ध्वाऽनन्दी भवति T. Up.2.7.