What is a term for a formal promise or pledge?

The term "commitment" refers to a formal promise or pledge to do something. It signifies a binding obligation or dedication to a course of action, which often involves making a serious choice or agreement. Commitments can relate to personal promises, professional obligations, or even social contracts. This term encompasses the idea of responsibility and accountability, underscoring an intent to follow through with the promised action or agreement.

In contrast, the other terms do not denote a formal promise. "Concur" means to agree with someone or share the same opinion. "Connoisseur" refers to someone who has expert knowledge in a specific area, typically related to art or gastronomy, and is not associated with promises or pledges. "Concede" means to acknowledge or admit something, often in the context of yielding or surrendering a point in an argument, rather than expressing a commitment. Therefore, "commitment" is the appropriate choice for defining a formal promise or pledge.