open-necked
US /ˌoʊ.pənˈnekt/
UK /ˌoʊ.pənˈnekt/

1.
berkerah terbuka, tanpa kerah
having a collar that is not fastened at the neck, or no collar at all
:
•
He wore an open-necked shirt to the casual dinner.
Dia mengenakan kemeja berkerah terbuka untuk makan malam santai.
•
The dress had an elegant open-necked design.
Gaun itu memiliki desain kerah terbuka yang elegan.