Shwetha Bhaskar of
Rediff.com noted that "Director Boopathy Pandian has a looser hold on pacing, ensuring that the interest never flags", adding that "the real reason to watch
Thiruvilaiyadal Aarambam is Dhanush, who epitomises the new age hero: he is no superman, he is not even close to perfect, and he is thoroughly unapologetic about it all."
Sify said, "Dhanush as the hyperactive Thiru is simply superb and his ability to deliver funny lines casually is uncommendable. Prakash Raj does his role to perfection, while Shriya looks good and her costumes are fabulous." Lajjavathi of
Kalki praised Bhoopathi Pandian for narrating a simple plot in an interesting and humorous manner within three hours while praising the performances of Dhanush and Prakash Raj and the clashes between them, dialogues and music. Malini Mannath of
Chennai Online wrote the film "is a wholesome, light-hearted family entertainer sans scenes that make you squirm for overt glamour or violence. You can [forget] your blues and laugh through this one". == Remakes ==