We uncoupled the trailer and left it behind.
Source: wiktionary
Ranked by relevance and common usage.
Keep "uncouple" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
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5 total sentences available.
We uncoupled the trailer and left it behind.
Source: wiktionary
The railway workers uncoupled the cars near the tail end of the train.
Source: wiktionary
On arrival at Spiez, the locomotive (No. 206) was immediately uncoupled and drew ahead to enable an Italian through coach from Interlaken to Milan to be loose shunted (with passengers aboard and controlled by means of its handbrake) on to the front of the train.
Source: wiktionary
The shunter has a lightweight portable radio transmitter by which, as he uncouples an incoming train into cuts for marshalling, he informs the Traffic Office of the number of wagons in each cut and its siding; [...].
Source: wiktionary
Showing 4 of 5 available sentences.
Closest matches include abrupt, abstract, alienate, cast off, cast out.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.