The ancient Tamil Literature not just called Rains as Rains but had different words & phrases to denote rains based on its nature / intensity etc. Tamil has 14 different names for Rains as this interesting tweet below shows.
Now on the regular front rains are likely to continue for the next couple of days over many parts of Tamil Nadu as the Well Marked Low that continues over Gulf of Mannar reaches the end of its cycle. But before completing its cycle it is likely to transfer its energy to an Upper Air Cyclonic Circulation developing over the Arabina Sea around Maldives.
This development though is unlikely to change the rain events drastically for Tamil Nadu with coastal areas continuing to see rains until Tuesday night or Wednesday. In the meanwhile though as the Arabian Sea disturbance picks pace the moisture drag created by it will lead to increased over the interior parts of Tamil Nadu.