This smokestack is releasing greenhouse gases and other pollutants into the atmosphere.
Source: tatoeba (5322545)
Ranked by relevance and common usage.
Keep "smokestack" 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.
If two options seem close, choose the one that best matches the audience and purpose of the sentence.
Choose a synonym only if it keeps the core idea of "smokestack" intact in the sentence you are editing.
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Read the full sentence after the swap. Keep the synonym only when the sentence becomes clearer or more precise.
Review note: Synonym lists are ranked with lexical data and reviewed for practical writing value. Use the comparison notes, sentence evidence, and source labels together; a high-ranking synonym can still be wrong when the audience, register, or grammar changes.
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If the synonym makes the sentence slower, vaguer, or more dramatic than intended, keep "smokestack" or choose a simpler alternative from the closest-match group.
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4 total sentences available.
This smokestack is releasing greenhouse gases and other pollutants into the atmosphere.
Source: tatoeba (5322545)
Anna the chimney sweep was sitting at a dizzying height on the factory smokestack. Just looking up at her gave me the collywobbles.
Source: tatoeba (10465143)
With its long tapered cowcatcher, massive headlamp and enormous diamond smokestack behind, wagon-top boiler, high running-plate above the driving-wheels reached from a front door in the square side-window cab, cylinders with slide valves mounted on top, and double bogie tender, General in its present form is typical of much earlier American locomotive practice.
Source: wiktionary
One of those areas can be found at the city’s northern edge, where the towering smokestacks of Wuhan Iron and Steel loom behind bent-backed farmers tending vegetable patches. Today Qingshan district is a patchwork of tiny fields, polluted streams and roadside markets selling building materials. But the city government is in the process of transforming this no-man’s-land into a sparkling new suburb. Between the steelworks and the mighty Yangtze River, demolished buildings and hoardings advertise a new logistics centre. Down the road, a giant railway station (Wuhan’s third) and a 6-kilometre bridge (the city’s fifth to cross the Yangtze) were completed in 2010.
Source: wiktionary
Closest matches include stack, chimney, chimneys, emission-related, flue.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.