lend support, weight, credence, etc. to something

idiomPart oflend

lend support, weight, credence, etc. to something — idiom

1. To make an idea or claim seem more valid or believable.

1.idiom
Definition

To make an idea or claim seem more valid or believable.

Example

The new data lends support to the climate change theory.

Does the report lend credence to the rumors about the merger?