imperceptibly
US /ˌɪm.pɚˈsep.tə.bli/
UK /ˌɪm.pɚˈsep.tə.bli/
副詞
1.
いつの間にか
in a very slight way that a person is unable to notice or feel:
例:
•
Gradually, almost imperceptibly, her condition had worsened.
Lingolandでこの単語を学ぶ
いつの間にか
in a very slight way that a person is unable to notice or feel: