This is the 825th most frequent Tamil word.
ஐய
The Tamil word "ஐய" means "doubt" or "uncertainty."
Here, "ஐய" (aiya) denotes doubt or suspicion as part of the noun phrase.
ஐயக் குற்றங்கள் இங்கு விளக்கப்படுகின்றன.
The doubtful matters are being explained here.
The word "ஐயா" (aiyā) here is a respectful form of address akin to 'sir'.
ஐயா, தயவுசெய்து என்னைக் கேட்டுக்கொள்கிறேன்.
Sir, I kindly request your attention.
In this sentence, "ஐயா" (aiyā) is used to address someone with politeness and formality.