v. 25B6; verb
clouds concealed the sun : HIDE, screen, cover, obscure, block out, blot out, mask, shroud, secrete.
he concealed his true feelings : HIDE, cover up, disguise, mask, veil; keep secret, keep dark, draw a veil over; suppress, repress, bottle up; informal keep a/the lid on, keep under one's hat.
reveal, confess.