東西移不動
這一支的「推」是真的用手推，推不動的是看得見的東西。
adjective · B2
Impossible to move, either because the thing is far too heavy or because it is fixed firmly in place.
推不動的、固定不動的
核心畫面
One way to hold immovable is to picture yourself pushing something and nothing happening at all. The push can be a hand against a rock, an argument against a decision, or bad news against a person's face — and in every case the thing you pushed is exactly where it was. The word never says the push was weak. It says the other side did not shift.
immovable 可以想成你用力推了一下，結果什麼都沒發生。推的方式有很多種：手推石頭、道理推決定、壞消息推一個人…更多收起
immovable 可以想成你用力推了一下，結果什麼都沒發生。推的方式有很多種：手推石頭、道理推決定、壞消息推一個人的表情。但結果都一樣，被推的那一邊還停在原來的位置。這個字從來不是在說你推得不夠用力。它說的是另一邊沒有移動。From the word’s history
Wiktionary records it as im- plus movable, from Middle English immevable. The prefix simply switches off the verb move, which is why one word covers a rock, a decision, a face and a piece of land.
Wiktionary 記的是 im-（不）加上 movable（可以移動的），來自中古英語 immevable。這個字首等於把 move 直接關掉——所以同一個字可以用在石頭、決定、表情和土地上。
Wiktionary entry for immovable, etymology_text: From Middle English immevable, immoveable. Equivalent to im- + movable (kaikki:3f6f69a190036ae4:1206441827)
Two branches
人推不動
同一個推的畫面，只是這次推的是人：推他的決定，或推他的情緒。
adjective · B2
Completely unwilling to change a decision or an opinion, whatever anyone says or asks.
毫不讓步的