1. Lacking official approval
   - unaccredited, unlicensed

See also: unauthorised [Brit], unauthorized

• energy-absorbing
• energy-releasing
• energy-storing
• enervate
• enervated
• enervating
• enervation
• Enesco
• Enets
• enfant terrible
• enfeeble
• enfeeblement
• enfeebling
• enfeoff
• enfeoffment
• enfilade
• enfilade fire
• enfleurage
• enflurane
• enfold
• enfolding
• enforce
• enforceable
• enforced
• enforcement