Fallacious
Fallacious adjective - Not using or following good reasoning.
Thinking is an antonym for fallacious.
Thinking
Thinking adjective - Having the ability to reason.
Usage example: it's surprising to find thinking people who believe such nonsense
Fallacious is an antonym for thinking.
Both words in one sentence
- Luffy calls him out on it (after realizing the fallacious thinking himself) — and he still doesn't get it.
Source: Fanfic / Second Wind
Cite this Source
Thinking and Fallacious. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fallacious/thinking
Fallacious & Thinking. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fallacious/thinking>.
Thinking or Fallacious. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fallacious/thinking.
Google Ngram Viewer shows how "fallacious" and "thinking" have occurred on timeline