1. Without knowledge or intention
   - unwittingly, inadvertently

Antonym: knowingly

• zooplankton
• zoopraxiscope
• zoopsia
• zoospore
• zoot suit
• zootoxin
• zori
• zoril
• Zoroaster
• Zoroastrian
• Grimm's law
• grimness
• grimoire
• grimy
• grin
• grind
• grind away
• grind down
• grind organ
• grind out
• grind to a halt
• Grindelia
• Grindelia robusta
• Grindelia squarrosa
• grinder