C2to prevent something from being seen or known about: The listening device was concealed in a pen.I tried to conceal my surprise when she told me her age.It was said that the police concealed vital evidence.Is there something you're concealing from me?→ SynonymhideverbHiding and disguisingconcealed
/-ˈsiːld/adjective›The robbery had been recorded on a concealed security camera.He was carrying a concealed weapon.The room had concealed lighting.Hiding and disguising