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Synonyms: awning canopy cloak concealment cover covering curtain divider envelope guard hedge mantle mask net partition security shade shelter shield shroud veil

Synonyms: adumbrate blind block out bulwark bury cache camouflage cloak close conceal cover cover up defend disguise ensconce fend guard mask obscure obstruct safeguard seclude secrete secure separate shade shadow shelter shield shroud shut off shut out shutter stash umbrage veil wall off

Antonyms: lay open open reveal uncover

Synonyms: cull eliminate evaluate extract filter gauge grade pick out process riddle scan select separate sieve sift sort winnow