擋住感染的東西與性質
這一家就是字面的用法：一樣東西能讓細菌長不起來。名詞指那瓶東西，形容詞指那個性質。
noun · B2
A liquid or cream that you put on a cut, a scrape, or the skin around it, to kill germs so that the place does not become infected.
消毒藥水
核心畫面
One way to hold this word: a small bottle tipped onto a cut. It is not medicine that goes inside you and fights an illness that has already started — it is the thing you put on the surface first, so that never get a place to grow. Everything else the word does grows out of that picture of a surface wiped so clean that nothing can live on it.
可以想成一瓶倒在傷口上的藥水。它不是進到身體裡去打仗的藥。它是先塗在表面的東西。目的是讓細菌根本住不進來。這個「把表…更多收起
可以想成一瓶倒在傷口上的藥水。它不是進到身體裡去打仗的藥。它是先塗在表面的東西。目的是讓細菌根本住不進來。這個「把表面擦到什麼都活不了」的畫面，就是這個字的底。往外長一點，變成形容一個空間乾淨到空蕩蕩。再往外一點，被擦乾淨的就不是桌面了，而是一段說法——難堪的部分也一起被抹掉。From the word’s history
Built from anti- (against) plus septic (to do with rotting and infection), so the parts add up to 'against going bad'.
由 anti-（對抗）加上 septic（腐壞、感染）組成，字面可以想成「對抗腐壞」，正好對上「不讓傷口爛掉」這個核心畫面。
Wiktionary entry for 'antiseptic' (etymology_text: 'From anti- + septic.'), supplied in this packet
Two branches
乾淨到沒有人味
醫院走廊的味道被借走了。原本是「細菌活不了」，變成「什麼痕跡都留不下」——先是空間，後來連一段話也可以被擦成這樣。
adjective · C1
Used about a place that is extremely clean and bare, with nothing dirty in it — and often nothing warm or personal in it either.
一塵不染（而冷清）的