1. Without knowledge or intention
   "he unwittingly deleted the references"
   - inadvertently, unknowingly

See also: unwitting

Antonym: wittingly

• heels over head
• heeltap
• Hefa
• heffalump
• heft
• heft up
• heftily
• heftiness
• hefty
• hegari
• Hegel
• Hegelian
• hegemon
• hegemonic
• hegemony
• hegira
• Heidegger
• Heidelberg man
• heifer
• heigh-ho
• height
• heighten
• heightening
• heights
• Heilong