Sentence-final particle
Sentence-final particles, including modal particles and interactional particles, are minimal lexemes (words) that occur at the end of a sentence and that do not carry referential meaning, but may relate to linguistic modality, register or other pragmatic effects. Sentence-final particles are common in Chinese, including particles such as Mandarin le 了, ne 呢, ba 吧, ou 哦, a 啊, la 啦, ya 呀, and ma 嗎/吗, and Cantonese lo 囉 and ge 嘅.