underthinkEtymologyFrom under- + think. Compare Old English underþenċan (“to look into, consider”).underthink means to give insufficient thought or consideration to; fail to consider adequately. Lexicurio rates it Sui generis — a strength score of 88 out of 100.verbTo give insufficient thought or consideration to; fail to consider adequately.“There was a new one; usually, I underthink these things.”