verb
conceal
kun-SEEL/kənˈsiːl/
To keep something from being seen or discovered.
He conceals a small wrapped gift behind his back while facing her.

Etymology
The root means hiding, with a prefix that may be intensive. English first used the word for withholding information or keeping secrets, then also for shielding things from sight.
In context
Take these wires and lay them in the cracks of the floor, and be careful not to let them show. A little dust over them will conceal them beautifully.
More examples
- The curtains conceal a crack in the wall.
- She tries to conceal her disappointment with a smile.
- The company concealed the risks from its customers.
Forms
conceal · conceals · concealed · concealing
concealment noun — The act of keeping something hidden.