Antonyms of adj unthinking

3 senses of unthinking

Sense 1
unreflective, unthinking, unthoughtful -- (not exhibiting or characterized by careful thought)

INDIRECT (VIA thoughtless) -> thoughtful -- (exhibiting or characterized by careful thought; "a thoughtful paper")

Sense 2
thoughtless, uncaring, unthinking -- (without care or thought for others; "the thoughtless saying of a great princess on being informed that the people had no bread; `Let them eat cake'")

INDIRECT (VIA inconsiderate) -> considerate -- (showing concern for the rights and feelings of others; "friends considerate enough to leave us alone")

Sense 3
lumpish, lumpen, unthinking -- (mentally sluggish)

INDIRECT (VIA stupid) -> smart -- (showing mental alertness and calculation and resourcefulness)

Similarity of adj unthinking

3 senses of unthinking

Sense 1
unreflective, unthinking, unthoughtful -- (not exhibiting or characterized by careful thought)
       => thoughtless (vs. thoughtful) -- (showing lack of careful thought; "the debate turned into thoughtless bickering")

Sense 2
thoughtless, uncaring, unthinking -- (without care or thought for others; "the thoughtless saying of a great princess on being informed that the people had no bread; `Let them eat cake'")
       => inconsiderate (vs. considerate) -- (lacking regard for the rights or feelings of others; "shockingly inconsiderate behavior")

Sense 3
lumpish, lumpen, unthinking -- (mentally sluggish)
       => stupid (vs. smart) -- (lacking or marked by lack of intellectual acuity)

Synonyms of adv unthinking

1 sense of unthinking

Sense 1
thoughtlessly, unthinkingly, unthinking -- (in a thoughtless manner; "he stared thoughtlessly at the picture")