Marbles
Marbles noun - The normal or healthy condition of the mental abilities.
Usage example: everyone thought she'd lost her marbles when she made such an illogical suggestion
Reason is a synonym for marbles in judgment topic. In some cases you can use "Reason" instead a noun "Marbles", when it comes to topics like intelligence, sanity, mental health.
Reason
Reason noun - The normal or healthy condition of the mental abilities.
Usage example: was afraid that with all the stress he was under, he'd lose all reason
Marbles is a synonym for reason in mental analysis topic. You can use "Marbles" instead a noun "Reason". informal substitute
Mutual synonyms
Both words in one sentence
- It seems to be the only reason that Thomas Zane has spent 40 years there without losing his marbles.
Source: Place Beyond Time -
It takes 3 Marbles to unlock OddSock and Toggle (not Swoop, he only needs 2 for some reason).
Source: Video Game / LittleBigPlanet - In Bully, if you decide to put marbles in front of the door of the boy's dorm and pull the fire alarm, this is why you should hide in the trash can because for some reason, the first person they go for is always you.
Source: Gang Up on the Human
Cite this Source
Reason and Marbles. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/marbles/reason
Marbles & Reason. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/marbles/reason>.
Reason or Marbles. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/marbles/reason.
Google Ngram Viewer shows how "marbles" and "reason" have occurred on timeline