This is the 211th most frequent Tamil word.
ஏத
"ஏத" in Tamil means "what" or "which" in English, used to ask or refer to something unspecified.
Here, 'ஏதாவது' (a derivative of 'ஏத') is used to mean 'something' in an indeterminate context.
நான் ஏதாவது சாப்பிட நினைக்கிறேன்.
I am thinking of eating something.
In this sentence, 'ஏதோ' (derived from 'ஏத') implies an unspecified or uncertain particle.
தூசி ஏதோ என் கண்ணில் விழுந்தது.
Some particle fell into my eye.
'ஏதுக்காக' (related to 'ஏத') conveys the idea of 'for something,' highlighting purpose or reason.