camouflaged (adj.)

• concealed
• disguised
• hidden
• imperceptible
• incognito
• indiscernible
• insensible
• invisible
• latent
• masked
• secret
• sightless
• submerged
• unapparent
• unnoticed
• unobserved
• unperceivable
• unperceived
• unrealized
• unseeable
• unseen
• viewless