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Related to stub out: snub out
To extinguish a lit object, especially a cigarette or cigar, by pressing the lit end against a hard surface. A noun or pronoun can be used between "stub" and "out." He stubbed out the cigarette and got up to leave. I'm so sorry, I didn't realize the smoke was bothering you. Let me stub this out.
stub something out
to put out something, such as a cigarette or cigar, by crushing the burning end against a hard object. Max stubbed his cigar out and tossed it into the street. He stubbed out his cigar.
To extinguish some cigarette, cigar, or similar smoking material by stamping the burning end against a surface: There were no ashtrays around, so I stubbed out the cigarette on the heel of my shoe. If you had told me the smoke from my cigar was bothering you, I would have stubbed it out.