উদাহরণ : This nest egg will ensure a nice retirement for us.
Preparation will guarantee success!.

সমার্থক : assure, guarantee, insure, secure

উদাহরণ : He verified that the valves were closed.
See that the curtains are closed.
Control the quality of the product.

সমার্থক : ascertain, assure, check, control, insure, see, see to it