© 2026 Sloth Lingo. Learn easy. Lounge wisely.

fideism

Upper-Intermediate (B2)

IPA: //faɪˈdiːɪzəm//

KK: /faɪˈdiːɪzəm/

noun
Definition

A belief system that emphasizes faith as the primary source of knowledge, especially in religious matters, rather than relying on reason or scientific evidence.


Example

Fideism suggests that faith is more important than reason when it comes to understanding religious truths.


Conversation
Sloth A
I was reading about fideism the other day, and it got me thinking.
Sloth B
Really? What's that about?
Sloth A
It's the idea of relying on faith instead of reason for religious beliefs.
Sloth B
That sounds interesting! Do you think it's a good approach?

Synonyms & Antonyms
Synonyms
faithism
belief
dogmatism
Antonyms
rationalism
skepticism
empiricism
Root Explanation

Fideism → It is formed from "fides" (meaning faith) and the suffix "-ism" (meaning a doctrine or belief system). The word "fideism" refers to the doctrine that faith is the primary source of knowledge, particularly in religious contexts.

Memory Tip

Think of 'faith' ('fides') as the core of this belief system ('-ism'), which helps you remember that fideism emphasizes faith as a source of knowledge.

Visually Confused Words
idism
deism
infidelism
siderism
identism
idealism
fluidism
fiendism
Is this page helpful?