Antonyms of adj doltish

1 sense of doltish

Sense 1
cloddish, doltish -- (heavy and dull and stupid)

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

Similarity of adj doltish

1 sense of doltish

Sense 1
cloddish, doltish -- (heavy and dull and stupid)
       => stupid (vs. smart) -- (lacking or marked by lack of intellectual acuity)