- Definitions|1
- Thesaurus|1.4k
- Abbreviations|0
| illogical | |
| impetuous | |
| implausible(extraordinary, amazing, incredible) | |
| impossible(extraordinary, amazing, incredible) | |
| improbable(extraordinary, amazing, incredible) | |
| inadvertent(adjective, careless, indifferent, apathetic, distracted) | |
| incogitable(extraordinary, amazing, dubious, astonishing, incredible) | |
| inconceivable(extraordinary, amazing, incredible) | |
| inconscient(careless, remote, distracted, heedless, forgetful) | |
| inconsistent | |
| inconstant | |
| incredible(extraordinary, amazing) | |
| indifferent(adjective, careless, apathetic, distracted, negligent) | |
| infirm | |
| inobservant(adjective, careless, indifferent, apathetic, distracted) | |
| irregular | |
| irresolute | |
| kooky(extraordinary, amazing, dubious, astonishing, incredible) | |
| lamebrained(extraordinary, amazing, dubious, astonishing, incredible) | |
| laughable |
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| APA | Smart Define. (2015). scatterbrained thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/scatterbrained/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "scatterbrained thesaurus" https://smartdefine.org/scatterbrained/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, scatterbrained thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/scatterbrained/thesaurus/synonyms>. |
| MLA | Smart Define. "scatterbrained thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/scatterbrained/thesaurus/synonyms> |