verb
verify
VAIR-uh-fy/ˈverɪfaɪ/
To confirm that something is true, accurate, or valid.
The technician verifies the scale's reading with a known weight.

Etymology
“True” and “make” combine in the idea of “making true.” In this verb, that means substantiating something by showing that reality confirms it.
In context
the first thing I did to try and verify her story was to see if his sideburns were dyed
More examples
- We verified the figures against the receipts.
- Please verify that the door is locked.
- The team is verifying the results independently.
Forms
verify · verifies · verified · verifying
verification noun — confirmation of truth or accuracy
verifiable adjective — able to be checked