Prosody
செந்தொடை
Senthodai
Explanation
A தொடை type: none of the other 7 devices are used - the line's beauty comes purely from the natural flow of its words, with no deliberate rhyme technique at all.
Story
Some of the most quietly beautiful classical lines lean on no rhyme device at all - செந்தொடை is the name for that plain, unforced elegance.
Example
A line that reads beautifully without leaning on any named தொடை device.