(1)遅くて無関心な
(2)知的な鋭敏さが不足すること
(3)学ぶ、あるいは理解するのが遅い
(4)slow to learn or understand
(5)slow and apathetic; "she was fat and inert"; "a sluggish worker"; "a mind grown torpid in old age"
さらに詳しく