| sudden(adjective, unexpected, quickly) | |
| unmethodical(adjective, unreliable, uneven, variable, erratic) | |
| unsystematic(adjective, erratic, random, haphazard) | |
| varying(adjective, unstable, unsettled, unpredictable, unreliable) | |
| afloat | |
| amorphous | |
| arrhythmic | |
| discrete | |
| disjunctive | |
| disordered(adjective, loose, irregular, rambling, incoherent) | |
| episodic | |
| immethodical | |
| inconsistent(adjective, unstable, irregular, unsettled, unpredictable) | |
| intermitting | |
| jerking | |
| paroxysmal | |
| pulsating | |
| shaky(adjective, irregular, unreliable, uneven, variable) | |
| snatchy | |
| spasmodical |
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| APA | Smart Define. (2015). spasmodic thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/spasmodic/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "spasmodic thesaurus" https://smartdefine.org/spasmodic/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, spasmodic thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/spasmodic/thesaurus/synonyms>. |
| MLA | Smart Define. "spasmodic thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/spasmodic/thesaurus/synonyms> |