Thunai () is a 1982 Indian Tamil-language film, produced and directed by Durai. The film stars Sivaji Ganesan, Saritha, M. G. Chakrapani and Suresh. It was released on 1 October 1982.
DasaratharamanÃÂ is an easy-going widower with a grown son,ÃÂ Raghuraman. He works as a sub-registrar, and his jovial nature earns him the friendship of nearly everyone he meets. In the house near where he lives, a poor family consisting of a widowed mother and several children resides. Vidhya is the sole breadwinner of the family, while her younger brotherÃÂ VijayÃÂ is looking for a job. Her older brother left the home after a love marriage and is struggling financially. She also has a younger sister,ÃÂ Nandhini, and another younger brother.ÃÂ DasaratharamanÃÂ makes it a point to look out forÃÂ VidhyaÃÂ as they take the same train toÃÂ theirÃÂ respective jobs.
VijayÃÂ introducesÃÂ MoorthyÃÂ to his family as a relative of a friend, and he quickly endears himself to everyone. He promises to help both brothers find jobsÃÂ andÃÂ proposes marriage toÃÂ Vidhya. To the family's joy, the twoÃÂ marry,ÃÂ withÃÂ DasaratharamanÃÂ presiding.
RaghuramanÃÂ is in love with hisÃÂ colleague, Radha, a determined woman with a forceful personality.ÃÂ Dasaratharaman, unaware of this, asks his friend,ÃÂ VKR,ÃÂ to find a bride for his son.ÃÂ RaghuramÃÂ plots to trick his father into choosing Radha as his bride, but bad timing ruins his plan. Unaware of his identity, Radha is rude toÃÂ DasaratharamanÃÂ in a bid to put off a marriage she doesn't want. Worried that he will never approve, she pushesÃÂ RaghuramanÃÂ to marry her in secret.ÃÂ DasaratharamanÃÂ learns this and arrives in time to see the wedding.
Moorthy, meanwhile, turns outÃÂ to beÃÂ a wanted criminal who tricks women into marriage to stealÃÂ their jewellery. HeÃÂ is arrested,ÃÂ andÃÂ Vidhya'sÃÂ marriageÃÂ is annulled,ÃÂ leaving her humiliated. When both of her brothers need cash to get a job,ÃÂ VidhyaÃÂ helps her oldest brother, causing a fracture in the family. The rest of the family moves out, leaving her alone. Feeling guilty for presiding over the marriage,ÃÂ DasaratharamanÃÂ keeps an eye on her.
Radha andÃÂ DasaratharamanÃÂ clash repeatedly. Unable to get over the circumstances of his son's marriage, he makes sly comments disparaging Radha to everyone. Radha, in retaliation, is rude to him and insinuates about his relationship withÃÂ Vidhya. Matters come to a head whenÃÂ RaghuramanÃÂ learns of Radha's behaviour towards his father, and Radha requests that DasaratharamanÃÂ leave the home.
In the end, when Vidhya suggests that they should get married as they both need a companion and have no one, they go to the registrar's office only for Vidhya to find out that he had arranged to adopt her, much to the shock of Dasaratharaman's family.
Soundtrack was composed by ShankarâÂÂGanesh and lyrics by Vaali.
Thiraignani of Kalki praised the acting of Ganesan and Radha and dialogues of Vietnam Veedu Sundaram and concluded Sundaram's dialogues are a support for this plot, Durai's hardwork is a support for dialogues, fans are support for Durai and for fans excitement is support. Balumani of Anna praised the performances of the cast, Ramasamy's humour, Shankar-Ganesh's music and called it a film which can be watched with family.