1. Not conforming to standard usage
   - unacceptable

See also: nonstandard

• excitable area
• excitableness
• excitant
• excitation
• excitative
• excitatory
• excite
• excited
• excitedly
• ironworks
• irony
• Iroquoian
• Iroquoian language
• Iroquois
• Iroquois League
• irradiate
• irradiation
• irrational
• irrational hostility
• irrational impulse
• irrational motive
• irrational number
• irrationality
• irrationally
• Irrawaddy