1. Not made known
   - unrevealed

See also: covert

• avidity
• avidly
• avidness
• avifauna
• avifaunal
• avifaunistic
• Avignon
• avionic
• avionics
• avirulent
• aviso
• avitaminosis
• avitaminotic
• avo
• avocado
• avocado pear
• avocado tree
• avocation
• avocational
• avocet
• Avogadro
• Avogadro number
• Avogadro's hypothesis
• Avogadro's law
• Avogadro's number