1
- an oath or swear word诅咒语。
1.1
- Grammar a word or phrase used to fill out a sentence or a line of verse without adding to the sense【语法】填充词（或短语）, 语助词, 虚词。
- Grammar (of a word or phrase) serving to fill out a sentence or line of verse【语法】（词, 短语）填补的, 补足的, 附加的。
词源
late Middle English (as an adjective)： from late Latin expletivus， from explere 'fill out', from ex- 'out'+plere 'fill'. The general noun sense 'word used merely to fill out a sentence' （early 17th cent.） was applied specifically to an oath or swear word in the early 19th cent.