undated
🇺🇸
/ˌʌnˈdeɪtɪd/
🇬🇧
/ˌʌnˈdeɪtɪd/
adjective
R
not having a date on it
I found an undated letter in the drawer.
日付がついていない
R
not known when it happened
The undated archaeological remains were discovered in the forest.
年代不明の
translation
日付のない, 日付不明の