| human dynamo(noun, device) | |
| sparker(noun, device) | |
| stimulant(noun, drug, substance, spur, goad) | |
| energizer(drug, upper, alcohol) | |
| fuse(noun, device) | |
| mover(whip, presence, player) | |
| restorative(drug, upper, alcohol) | |
| spark(noun, spur, incentive, promoter) | |
| sparking plug(noun, expression, idiom) | |
| stimulus(noun, drug, spur, incentive, upper) | |
| tonic(drug, upper, alcohol) | |
| VIP(whip, presence, player) | |
| abetter | |
| abettor | |
| accelerator | |
| achiever(rock, whip, pillar, presence, player) | |
| activator | |
| active(adjective, energetic, daring, resourceful, innovative) | |
| active person | |
| actuator |
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| APA | Smart Define. (2015). spark plug thesaurus. Retrieved September 20, 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 20, 2026). |
| Harvard | Smart Define 2015, spark plug thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/spark_plug/thesaurus/synonyms>. |
| MLA | Smart Define. "spark plug thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/spark_plug/thesaurus/synonyms> |