
She has sung a classical-based song with TM Sounderajan in the film Dharshinam (1970), where she was paired with Cho. Venkatesh and this opportunity she got due to the film's producer P.A. The first song that she sang was in a film called Magale Un Samathu, composed by G. She had done playback singing for 300 songs, mostly pictured on herself, in Tamil films. Her on-screen pair with Nagesh was very popular in 1960–69 and then with Cho in the 1970s and 80s and later with Thengai Srinivasan, Venniradai Moorthy, and Surali Rajan in the 70s and 80s. Her on-screen pair with Tangavelu was appreciated in the film Vallvanakku Vallavan in 1965. She has acted predominantly in Tamil films since 1958, but also acted in Telugu, Hindi, Malayalam and Kannada movies as well. Her dance master Suryakala recommended her to the director Masthaan to play the role. The first time Manorama stood before the camera was for a Sinhalese film Sukumali in 1947, in which she played the heroine's friend. And you have the talent, too, to reach higher peaks." That is when I got confidence and continued doing comedy roles." I was very doubtful about it, but he told me, "If you are going to act in films only as a heroine, people here will throw you out of the industry after three or four years, but doing such roles will take you places. It was a comical role, and he trusted me so much and said that I will be able to pull it off.

It was he who changed my life by casting me in the film Maalayitta Mangai in 1957. When asked in an interview as to how she got into films, she quoted, "It's all because of Kannadasan. She was given equally challenging roles alongside the well known comedian Nagesh in 50 films. Then, she concentrated more on comedy from 1960. The first film in which she played the heroine was the 1963 Konjum Kumari. She migrated from dramas to the silver screen with the role of a heroine in the 1958 Tamil film Malayitta Mangai: Kannadasan gave her the lead role in this film. She then took part in an unfinished film starring S. She credits her work in Manimagudam as where she was first recognized as an actress. Nataka Mandram company and played in hundreds of stage productions all over the district: The dramas included Manimagudam, Thenpandiveeran and Pudhuvellam. She showed her skill in dialogue delivery and was offered a job in S.S.R. Rajendran, who was residing at Pudukkotai, in Tamil Nadu, and P.A. She acted in small roles in few Vairam Nataka Sabha dramas. But now, fortunately, my grandson is a doctor, and I am proud of it." Early career So, if I hadn't taken up acting, I would have tried to become a doctor as my mom wished for it. But it was not easy to become a doctor in those days, and I became an actress. She quoted in an interview in 2015, "My mom wanted me to study medicine. However, they divorced in 1956 and started to live separately in Chennai. Ramanathan and married him in 1954 the couple have a son named Bhoopathy born in 1955.

Manorama fell in love with her manager in the drama troupe S. She lost hope of becoming a film actor when both these films remained incomplete. After watching her performance in plays, she was offered her first film, named Inbavazhvu, by Janakiraman, which remained 40% incomplete and later Kannadasan offered her lead role in a second film, Unmayinkottai, which got shelved after shooting for about 40%. She was selected for a role in his ManiMagudam drama written by Kalaignar M Karunanidhi.She continued to act in plays and performed as a playback singer as well. Manorama went and met S S Rajendran (SSR) when he camped at her native district with his drama troupe. During this time, she was rechristened Manorama by one of her dramas' director Thiruvengadam and harmonist Thiayagarajan. Hence her acting career began at the age of twelve, acting in plays. The drama troupe decided to give her this role in the drama titled Andhaman Kadhali. Once a drama troupe had come to Pallathur, but the actress who was to play a small part, suddenly dropped out due to her inability to sing and the troupe was looking for an artiste who could act and sing as well. While in Pallathur, her mother had started vomiting out blood, hence Manorama decided to start working as a maid and dropped out of school at the age of 11. Her family moved to Pallathur near Karaikudi owing to poverty. She mentioned her indebtedness to her mother for her success: Many of the mother roles that she has played in films resemble her own mother.

Her mother brought her up by taking up a job as a maid. Manorama was born to Kasiyappan Kilakudaiyar and Ramamirtham in Mannargudi, a town in the erstwhile Thanjavur district of Madras Presidency.
