1. Not capable of being obtained
   - inaccessible, unobtainable, untouchable

See also: unavailable

• audio CD
• audio compact disc
• audio frequency
• audio lingual acquisition
• audio recording
• audio system
• audio-lingual
• audiocassette
• audiogram
• audiologist
• audiology
• audiometer
• audiometric
• audiometry
• audiophile
• audiotape
• audiovisual
• audiovisual aid
• audit
• audit program
• audit programme
• audited account
• audition
• auditive
• auditor