dareyoudaoicibaDictYouDict
dare: [OE] Dare used to be a widespread Germanic verb, with relatives in Old High German (giturran) and Gothic (gadaursan), but today it survives only in English (the similarlooking Danish turde and Swedish töras are probably not related). It comes via Germanic *ders- from an Indo-European *dhers-, which also produced Greek thrasús ‘bold’ and Old Slavic druzate ‘be bold’.

In Old English it was a conjugationally complex verb, with anomalous present and past forms, but most of its oddities have now been ironed out: the past form durst is now on its last legs, and only the 3rd present singular form remains unusual, especially in negative contexts and questions: she daren’t rather than she dares not.
bobby soxyoudaoicibaDictYouDict
1943, from diminutive of bob (n.2) + sox. So called because they are "shortened" compared to knee-socks. Derivative bobby-soxer first attested 1944.
Months ago colored bobby sox folded at the top were decreed, not by anyone or any group but, as usual, by a sudden mysterious and universal acceptance of the new idea. Now no teen-ager dares wear anything but pure white socks without a fold. ["Life" magazine, Dec. 11, 1944]
daredevil (n.)youdaoicibaDictYouDict
1794, "recklessly daring person," from dare (v.) + devil (n.). The devil might refer to the person, or the sense might be "one who dares the devil" (compare scarecrow, pickpocket, cutthroat, also fear-babe a 16c. word for "something that frightens children"). As an adjective, from 1832.