One way to hold lopsided: two sides that were meant to match, with one of them sagging. The left end of the shelf drops, the pens roll that way, and the eye notices the tilt before anyone measures anything. Whether the two sides are two ends of a shelf or two teams, the picture is the same drop on one side.
lopsided 可以想成本來該一樣的兩邊，其中一邊垂了下去。架子左邊低一點，筆就慢慢往那邊滾，還沒量就先看出來。至於這兩邊是架子的兩端、嘴角的兩側，還是兩支球隊，畫面都一樣：有一邊被壓低了。
From the word’s history
The packet gives lop (to hang loosely) + side + -ed, which is literally having a side that hangs down — the same picture the modern word still uses.
證據裡寫的是 lop（鬆鬆地垂下來）加 side（邊）加 -ed。字面上就是「有一邊垂下去的」。今天用的畫面幾乎沒變，只是垂下去的東西從物體換成了比數或分工。
packet evidence: Wiktionary etymology_text for lopsided (From lop (to hang loosely) + side + -ed), source_ref kaikki:3f6f69a190036ae4:1136007874:12333
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