罢了
bàle · HSK 6
particle: elucidating a previous proposition so as to diminish its effect
🤷 罢 = stop/cease + 了 = perfective: 'and that's the end of it'
罢 means to stop or finish (think 'cease'); 了 marks completion. Together they soften a statement to mean 'that's all' or 'merely'. Used to downplay: 'it's nothing 罢了' = it's no big deal, end of story.
了 — pictograph of swaddled child with no arms
了 originally depicted an infant wrapped in swaddling cloth, with the arms hidden or bound — a variant of 子 (child) without the arms. From 'finished wrapping' it extended to mean 'completed' or 'finished,' which is its main modern grammatical use as an aspect particle marking completed action.