Douglas Harper's Etymology Dictionary
in Indian religion, "one who has attained perfection and bliss," 1846, from Sanskrit siddhah "accomplished, achieved, successful, possessing supernatural power, sorcerer, saint," related to sidhyati "reaches his goal, succeeds," sadhuh "right, skilled, excellent, a holy man."
Wikipedia
Siddha ( Tamil 'Great thinker/wise man', Sanskrit, "perfected one") is a term that is used widely in Indian religions and culture. It means "one who is accomplished". It refers to perfected masters who have achieved a high degree of physical as well as spiritual perfection or enlightenment. In Jainism, the term is used to refer the liberated souls. Siddha may also refer to one who has attained a siddhi, paranormal capabilities.
Siddhas may broadly refer to siddhars, naths, ascetics, sadhus, or yogis because they all practice sādhanā.
The Svetasvatara (II.12) presupposes a 'Siddha body.
Siddha is a Sanskrit term meaning "one who is accomplished"; has mastered, or has mastery over pure Consciousness/Knowledge ( Chit).
- Siddhar; Chittar, a variant English spelling
Siddha may refer to:
- Siddha, in Hinduism, a person who has attained a high level of spiritual enlightenment; or, in Jainism, a soul who is permanently liberated from the cycle of birth and death
- Siddha Yoga, a spiritual path in Hindu traditions
- Siddha medicine, a form of South Indian, Tamil traditional medicine
Usage examples of "siddha".
We hear that great Siddhas used to cure the sickness of others by mere touch, Ramakrishna gave even yogic experience by a touch.