Unseen
来自Big Physics
wiktionary
From Middle English unsen, unseyn, unseien, from Old English unġesewen, from Proto-Germanic *unsewanaz, equivalent to un- + seen. Cognate with Dutch ongezien(“unseen”), German Low German unsehn(“unseen”), German ungesehen(“unseen”).
un- + seen
etymonline
unseen (adj.)
early 13c., from un- (1) "not" + seen. Similar formation in Old English ungesewen, Middle Dutch ongesien, Dutch ongezien, Old High German ungesëhan, German ungesehen, Old Norse usenn.
