guaranteed
UK: ˌɡærənˈtiːd | US: ˌɡærənˈtiːd
adj. formally promised or assured (often in writing)
vt. provided a formal assurance or warranty for something
The word "guaranteed" stems from the Old French "garantir" (to protect, pledge), which itself derives from the Germanic root "war-" (to guard). The suffix "-ee" indicates the recipient of the action (e.g., "employee"), while "-ed" marks the past participle form. Over time, "guarantee" evolved to signify a binding promise, often contractual, and "guaranteed" became its adjective/verb form emphasizing assured outcomes.
The product comes with a guaranteed refund policy.
Her success was almost guaranteed due to her meticulous preparation.
The company guaranteed timely delivery of all orders.
A guaranteed income scheme was introduced to support low-earning families.
The certificate guaranteed the authenticity of the artwork.