The term 'argument ender' refers to a phrase or word used to conclude an argument. Two common examples of argument enders are 'AMEN' and 'QED'. AMEN is a Hebrew word meaning 'so be it' or 'TRULY', and is often used in religious contexts. QED is an abbreviation of the Latin phrase 'quod erat demonstrandum', which translates to 'which was to be demonstrated'. Both phrases are used to signify the conclusion of an argument.