1. Without being seen
   "these organisms enter the body invisibly"

See also: invisible

Antonym: visibly

• skin patch
• skin perceptiveness
• skin pop
• skin rash
• skin sensation
• skin senses
• skin test
• skin tumor
• skin tumour
• skin-deep
• skin-dive
• skin-diver
• skincare
• skinflint
• skinful
• skinhead
• skinheads
• skink
• skinless
• skinned
• skinner
• Skinnerian
• skinniness
• skinny
• skinny-dip