at the back of your mind
US /æt ðə bæk əv jʊər maɪnd/
UK /æt ðə bæk əv jʊər maɪnd/

1.
마음 한구석에, 무의식중에
a thought or worry that you have but that you are not thinking about consciously
:
•
The thought of the upcoming exam was always at the back of her mind.
다가오는 시험에 대한 생각이 항상 그녀의 마음 한구석에 있었다.
•
He had a nagging feeling at the back of his mind that he had forgotten something important.
그는 중요한 것을 잊었다는 찜찜한 기분이 항상 마음 한구석에 있었다.