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Nayak, Nayaka, Nayakar, Nayakkar, Naik, Naiker, Naicker, Naickan, Naiken, Nayakkan, Naidu, Nayudu or Naidoo is a common title used by various caste and ethnic groups across India. They are all derivatives of the original Sanskrit Nayaka, meaning a leader.. In Kerala, it is said to be the corruption of the word Nayak in Malayalam.
- P. V. Balakrishnan (1981). Matrilineal System in Malabar. p. 27.
- Madras (Presidency) (1885). Manual of the Administration of the Madras Presidency. p. 100.
In kovilpatti region more and more naickers caste spread.