say it: ger-uhn-TEE
guarantee is a verb and noun meaning "give surety or assume responsibility". It carries 7 recorded senses.
promise to do or accomplish
“guarantee to free the prisoners”
an unconditional commitment that something will happen or that something is true
“there is no guarantee that they are not lying”
a collateral agreement to answer for the debt of another in case that person defaults
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for guarantee come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.