| motive(drug, upper, alcohol) | |
| nag | |
| original(adjective, resourceful, innovative, ingenious, inventive) | |
| pick-me-up(drug, upper, alcohol, impetus) | |
| pillar | |
| promoter(noun, spur, incentive) | |
| quid | |
| reviver(drug, upper, alcohol) | |
| rising star(noun, comer) | |
| rock | |
| shot in the arm(expression, idiom, drug, upper, alcohol) | |
| slogger | |
| speed(drug, upper, alcohol) | |
| stimulating substance(expression, drug, upper, alcohol) | |
| stopper | |
| stopple | |
| suppository | |
| take over(expression, adjective, energetic, daring, resourceful) | |
| takeover(adjective, energetic, daring, resourceful, industrious) | |
| taper |
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| APA | Smart Define. (2015). spark plug thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/spark_plug/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "spark plug thesaurus" https://smartdefine.org/spark_plug/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, spark plug thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/spark_plug/thesaurus/synonyms>. |
| MLA | Smart Define. "spark plug thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/spark_plug/thesaurus/synonyms> |