Vows (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">vows</span>' is the definition.<br/ ><span class="explanation-format__explanation">('oath' can be a synonym of 'vow')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for oaths that I've seen before include "truths may be established by them" , "Solemn vows" , "Solemn sworn promises" , "four-letter words" , "Curses - words of honour?" .)
(Other definitions for promises that I've seen before include "Undertakings, vows" , "''But I have ...to keep / And miles to go before I sleep'' (Robert Frost)" , "Makes a commitment" , "Commitments, vows" , "Pledges (often repeated!)" .)