para (Skt) means: other amorous (Eng) means: desire <br> paramour is: (illicit) desire on others.
paramour sounds like PARA(parallel) aMOuR(love)... as in parallel love.. which connotes a secret or illicit love.. lame i accept :D
par(per ,.throughly) +amour..means illicit..throughly illicit in behavior and relation ..so a throghly illicit lover....
Also similar to enamour- to love. paramour- to love a paraya