英语词源字典 - 在线词源网站

bore (v.1)[bore 词源字典]: Old English borian "to bore through, perforate," from bor "auger," from Proto-Germanic *buron (cognates: Old Norse bora, Swedish borra, Old High German boron, Middle Dutch boren, German bohren), from PIE root *bher- (2) "to cut with a sharp point, pierce, bore" (cognates: Greek pharao "I plow," Latin forare "to bore, pierce," Old Church Slavonic barjo "to strike, fight," Albanian brime "hole").

The meaning "diameter of a tube" is first recorded 1570s; hence figurative slang full bore (1936) "at maximum speed," from notion of unchoked carburetor on an engine. Sense of "be tiresome or dull" first attested 1768, a vogue word c. 1780-81 according to Grose (1785); possibly a figurative extension of "to move forward slowly and persistently," as a boring tool does.[bore etymology, bore origin, 英语词源]
instantly (adv.): late 15c., "urgently, persistently," from instant (adj.) + -ly (2). Meaning "immediately" is 1550s.
persistent (adj.): 1723, from persistence or from Latin persistentem (nominative persistens), present participle of persistere (see persist). Related: Persistently.
tag (v.1): "to furnish with a tag," late 14c. (implied in tagged), from tag (n.1). Meaning "go along as a follower" is from 1670s; sense of "follow closely and persistently" is from 1884. Related: Tagging. Verbal phrase tag along is first recorded 1900.