1. Incongruous; inviting ridicule
   "ask a nonsensical question and get a nonsensical answer"
   - absurd, cockeyed, derisory, idiotic, laughable, ludicrous, preposterous, ridiculous 
2. Having no intelligible meaning
   "a nonsensical jumble of words"
   - nonsense

See also: foolish, meaningless, nonmeaningful, nonsensicality

Encyclopedia: Nonsensical

• inbuilt
• inc.
• Inca
• incalcitrant
• incalculable
• incalculably
• incalescence
• incalescent
• Incan
• incandesce
• incandescence
• incandescent
• incandescent lamp
• incantation
• incantatory
• incapability
• incapable
• incapableness
• incapably
• incapacitate
• incapacitated
• incapacitating
• incapacitation
• incapacity
• incarcerate