Purposeful and Slapdash

Purposeful

Purposeful adjective - Fully committed to achieving a goal.

Slapdash is an antonym for purposeful.

Slapdash

Slapdash adjective - Lacking a definite plan, purpose, or pattern.
Usage example: the investigation of the charges against the mayor was slapdash and not very thorough

Purposeful is an antonym for slapdash.
Cite this Source
Slapdash and Purposeful. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/purposeful/slapdash
Purposeful & Slapdash. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/purposeful/slapdash>.
Slapdash or Purposeful. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/purposeful/slapdash.
Google Ngram Viewer shows how "purposeful" and "slapdash" have occurred on timeline