One way to hold this word: the moment something is placed in your hands and your wrists dip. Weighty names that dip. Sometimes the thing really is heavy — a thick book, an iron chain. Sometimes nothing is in your hands at all, and what dips is your attention: a question you cannot answer quickly, a decision you have to sit down with. Same downward pull, different place.
可以想成有人把一樣東西放到你手上，手腕立刻往下沉的那一秒。weighty 說的就是那個下沉。有時候東西是真的重，像厚字典、鐵鍊。有時候手上什麼也沒有，往下沉的是你的心思：一個答不出來的問題，一個得坐下來想的決定。同樣是往下壓，只是換了地方。
From the word’s history
weight plus the ending -y, recorded in Middle English as weighti: carrying weight.
weight（重量）加上 -y（帶有…的），中古英文寫成 weighti，就是「帶著重量的」。這一條線索正好對上兩個用法：一個是手上的重量，一個是心上的重量。
Wiktionary entry 'weighty' in the supplied packet (source_ref kaikki:3f6f69a190036ae4:673071670): 'From Middle English weighti, weghti, wighti, equivalent to weight + -y.'
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