unperceptive

Someone who's unperceptive doesn't notice or understand things. An unperceptive book review misses the entire point of a great novel.

When you perceive something, you see it or comprehend it, and if you're good at that, you're perceptive. Perceptive people are sensitive and able to see even what's only hinted at. Unperceptive people are generally unobservant, especially when it comes to subtle details. An unperceptive reporter will fail to ask the right questions, and an unperceptive detective will miss many clues.

Definitions of unperceptive
  1. adjective
    lacking perception
    “as unperceptive as a boulder”
    synonyms: unperceiving
    blind
    unable or unwilling to perceive or understand
    unobservant, unseeing
    not consciously observing
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    Antonyms:
    perceptive
    having the ability to perceive or understand; keen in discernment
    acute, discriminating, incisive, keen, knifelike, penetrating, penetrative, piercing, sharp
    having or demonstrating ability to recognize or draw fine distinctions
    apprehensive, discerning
    quick to understand
    apperceptive
    able to relate new percepts to past experience
    insightful
    exhibiting insight or clear and deep perception
    observant, observing
    quick to notice; showing quick and keen perception
    quick-sighted, sharp-eyed, sharp-sighted
    keenly perceptive or alert
    subtle
    able to make fine distinctions
    understanding
    characterized by understanding based on comprehension and discernment and empathy
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  2. adjective
    lacking sensitivity, taste, or judgment
    Synonyms:
    indiscriminating, undiscriminating
    not discriminating
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