1. Stupefied by (or as if by) some narcotic drug
   - spacy, spacey 
2. Confused or disoriented as if intoxicated through taking a drug

See also: confused, unconventional

• unencumbered
• unended
• unending
• unendingly
• unendowed
• unendurable
• unendurably
• unenergetic
• unenergetically
• unenforceable
• unenforced
• unengaged
• unenlightened
• unenlightening
• unenlightenment
• unenlivened
• unenterprising
• unenthusiastic
• unenthusiastically
• unentitled
• unenviable
• unequable
• unequal
• unequal to
• unequaled