Anything that assures a certain outcome. / A legal assurance of something, e.g. a security for the fulfillment of an obligation.

To give an assurance that something will be done right. / To assume or take responsibility for a debt or other obligation. / To make something certain.

simple past tense and past participle of guarantee

Made certain; promised.

plural of guarantee

Third-person singular simple present indicative form of guarantee

present participle of guarantee

Capable of being guaranteed.

The quality of being guaranteeable.

In a guaranteeable manner