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 सहस्
सहस्sahasPower, might, strength.
Power, might, strength.
Force, violence.
Victory, conquering.
Lustre, brightness.
Water.
Derived forms and compounds
सहस्sahas, Adjective
Powerful, mighty; भीष्मो हि देवः सहसः सहीयान् Bhāg.11.23.48. -Masculineसह्-असि
The month called Mārgaśīrṣa; Śi.6.57;16.47; सहसि तत्र समृद्धिमुपागते Rām. ch.4.83; Bhāg.12.11.41.