frist (n.)youdaoicibaDictYouDict[frist 词源字典]
"a certain space of time," Old English frist, first "space of time, period; respite, truce" (compare Old Frisian first, Old High German frist, Old Norse frest). Archaic from 16c. As a verb, "delay," from early 13c. (perhaps in Old English but unattested).[frist etymology, frist origin, 英语词源]