S: (v) elaborate,lucubrate,expatiate,exposit,enlarge,flesh_out,expand,expound,dilate (add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing; ) "She elaborated on the main ideas in her dissertation" From word Net
Meaning and definitions of Expound with similar and opposite words in Tamil Dictionary. Also find native spoken pronunciation of Expound in Tamil and in English language.
