Antonyms for Quick on the uptake

Antonyms starting with letter I

• incompetent

  very able or skilled
• ignorant

  very able or skilled, perceptive, smart
• inept

  very able or skilled, quick to learn, perceptive
• idiotic

  smart, perceptive
• imbecile

  perceptive, smart
• idle

  smart
• impotent

  smart
• inactive
• ineffective
• insensitive

  open to new ideas
• incorrect

  quick to learn
• inapt

  quick to learn
• incapable

  quick to learn
• indefinite

  perceptive
• indistinct