Off the top of one's head
On the spur of the moment and off the top of one's head are semantically related. In some cases you can use "On the spur of the moment" instead an adverb phrase "Off the top of one's head".
On the spur of the moment
On the spur of the moment adverb - On impulse; without premeditation.
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Synonyms for On the spur of the moment
Off the top of one's head and on the spur of the moment are semantically related. You can use "Off the top of one's head" instead an adverb phrase "On the spur of the moment".
Mutual synonyms
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On the spur of the moment and Off the top of one's head. (2017). Retrieved 2026, August 02, from https://thesaurus.plus/related/off_the_top_of_one_s_head/on_the_spur_of_the_moment
Off the top of one's head & On the spur of the moment. N.p., 2017. Web. 02 Aug. 2026. <https://thesaurus.plus/related/off_the_top_of_one_s_head/on_the_spur_of_the_moment>.
On the spur of the moment or Off the top of one's head. 2017. Accessed August 02, 2026. https://thesaurus.plus/related/off_the_top_of_one_s_head/on_the_spur_of_the_moment.