substitute

v.t. (to put in the place of another; to introduce as an atom or group by substitution) प्रतियोजन करणे (प्रतिवस्तुयोजन करणे) n. (something that is put in place of something else or is available for use instead of something else) प्रतियोजित (न.), प्रतिवस्तु (स्त्री.)