1. Incapable of being justified or explained
   - indefensible, insupportable, unwarrantable, unwarranted

See also: inexcusable, unjustifiably

• visual cell
• visual communication
• visual cortex
• visual defect
• visual disorder
• visual display unit
• visual field
• visual hallucination
• visual image
• visual impairment
• visual joke
• visual modality
• visual percept
• visual perception
• visual property
• visual purple
• visual range
• visual sensation
• visual sense
• visual signal
• visual space
• visual system
• visualisation
• visualise
• visualised