Fastidious and Slack

Opposite meaning words

Fastidious adjective - Hard to please.

Show all Definitions

Slack is an antonym for fastidious in particular topic.

Slack adjective - Failing to give proper care and attention.

Show all Definitions

Fastidious is an antonym for slack.

Nearby Words: slacken, slackened, slackness, slacker, slacked

Cite this Source

Slack and Fastidious. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/fastidious/slack

Fastidious & Slack. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/fastidious/slack>.

Slack or Fastidious. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/fastidious/slack.

Google Ngram Viewer shows how "fastidious" and "slack" have occurred on timeline