TSUMUGU · TOCFL 1 (est.) · 字
啦
˙ㄌㄚ · la
particle — sentence-final la (好啦), often 了+啊 fused
字源 FORM — what the parts do
A mouth (口) marks 啦 as a spoken noise. 拉 lā lends the sound, its "pull" meaning left at the door. 啦 is what 了 and 啊 become when they run together at the end of a sentence — 好了啊 spoken fast is 好啦, the news landing with a little lift.
故事 STORY — a scene to remember it by
嘴（口）邊借個拉（拉）的音，把「了」「啊」一口連出來——好啦！
A mouth (口) borrows the sound of 拉, runs 了 and 啊 together in one breath — 好啦!
字源記憶法
意 · Meanings
(本義)好啦、走啦— sentence-final particle (了+啊 fused)常用
→啦啦隊— la-la (onomatopoeic syllable)
(本義) original meaning · → ⇒ each arrow = one more step of extension