guarantee-v; 2 Senses

Sense Number 1: give assurance or make promise, assume responsibility for following through

Commentary: Syntax Includes: NP1[agent] GUARANTEE SCOMP NP1[agent] GUARANTEE NP2[patient]
NOTE: Agent is under obligation upon making the assertion of a guarantee; may only imply an agent, as when the speaker seems to be guaranteeing an effect (see the final 2 examples); the agent of GUARANTEE may not be typical (see ex. 6), but a promise is being made

She guarantees this drinking water is good.
The government won't guarantee the safety of those prisoners.
Those tires are guaranteed for two years.
European Airlines guarantees its customers top-quality service.
He guaranteed to spare the lives of any troops who surrendered or deserted.
Discover this new step-by-step golf system that guarantees to fix your golf slice in just 21 days!
It is research that is guaranteed to delight men - and infuriate the women.
Check out the following exercise, guaranteed to freak you out.

VerbNet: promise-37.13,conjecture-29.5-2,future_having-13.3
FrameNet: NP
PropBank: guarantee.01
WordNet 3.0 Sense Numbers: 1, 3, 4

Sense Number 2: make certain or ensure a result

Commentary: Syntax Includes: NP1 GUARANTEE NP2 NP1 GUARANTEE SCOMP
NOTE: The subject is NOT an agent-- no agent is placed under an obligation.
NOTE: One thing or event ensures that another will happen.

Sunny skies today don't guarantee them tomorrow.
This bestseller has guaranteed him a secure financial future.
His victory in the election was guaranteed by the large turnout.
Late fines doesn't always guarantee that people return borrowed items on time.

VerbNet: ensure-99
FrameNet: NP
PropBank: NM
WordNet 3.0 Sense Numbers: 2