不熱心

(1)the trait of remaining calm and seeming not to care; a casual lack of concern

(2)冷静さを保ち、気にかけないように思える特性

(3)偶然なる思慮不足

(4)the trait of being unwilling; "his unwillingness to cooperate vetoed every proposal I made"; "in spite of our warnings he plowed ahead with the involuntariness of an automaton"

(5)気が進まないという特性

(6)the trait of lacking enthusiasm for or interest in things generally

(7)一般的に物事に対する熱意や関心が欠如している特性