Audacious
Audacious adjective - Displaying or marked by rude boldness.
Spark plug and audacious are semantically related. In some cases you can use "Spark plug" instead an adjective "Audacious".
Spark plug
Spark plug noun - Electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark.
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Synonyms for Spark plug
Audacious and spark plug are semantically related. Sometimes you can use "Audacious" instead an adjective phrase "Spark plug".
Mutual synonyms
Cite this Source
Spark plug and Audacious. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/audacious/spark_plug
Audacious & Spark plug. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/audacious/spark_plug>.
Spark plug or Audacious. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/audacious/spark_plug.
Google Ngram Viewer shows how "audacious" and "spark plug" have occurred on timeline