עָלַם ʻâlam (H5956)

to veil from sight, i.e. conceal (literally or figuratively)

1) to conceal, hide, be hidden, be concealed, be secret 1a) (Qal) secret (participle) 1b) (Niphal) 1b1) to be concealed 1b2) concealed, dissembler (participle) 1c) (Hiphil) to conceal, hide 1d) (Hithpael) to hide oneself

a primitive root;