To call a contract valid, the parties must consent to it freely and voluntarily. The principle of consensus-ad-idem is followed meaning the contracting parties must mean something in the same sense. The contracting parties must have an identical understanding in regards to the contents of the contract. In contract law in India, the meaning of consent is given in Section 13, which states that “it is when two or more persons agree upon the same thing and in the same sense”. So the two people must agree to the same thing in the same sense as well. Just giving consent is not enough for a contract to be enforceable. The consent given must be free and voluntary. The definition of free consent provided under Section 14 of the Indian Contract Act is Consent that is free from Coercion, Undue Influence, Fraud, Misrepresentation, or Mistake. Consent is said to be so caused when it would have been given in the absence of such factors. The aim of this concept is to make sure that decision of the contracting parties was clear since the contract’s inception. Therefore consent given under coercion, undue influence, fraud, misrepresentation, or a mistake has the potential to invalidate the contract. Actual consent may be expressed through words or actions, or silence or inaction when the situation is so that the silence or inaction is intended to give consent; it is not always essential to communicate actual consent to the contracting party. Apparent consent exists when a person’s actions or words, silence or inaction, would be understood by a reasonable person as intended to give consent. However, a genuine but irrational belief that the other person is consenting to a contract does not constitute apparent consent. If consent is given under any of the above circumstances, the contract is considered voidable at the will of the aggrieved party, as in accordance with section 19 of the Indian Contract Act, 1872. Thus to constitute a contract that is valid in nature, the important element is free consent.