- Today's Word
Fallacious
fuh-LAY-shus
Definition
- (adjective) Based on a mistaken belief or misleading reasoning.
- Logically unsound or deceptive.
Example
His argument was fallacious, relying on false assumptions rather than solid evidence.
Fun Fact
“Fallacious” comes from the Latin fallacia, meaning “deception” or “trickery.” The term is closely linked to logical fallacies—errors in reasoning that often appear persuasive but are fundamentally flawed. Common examples include the slippery slope fallacy and ad hominem attacks. Recognizing fallacious reasoning is a key skill in debate, critical thinking, and media literacy, helping people avoid being misled by faulty logic.
(noun) Excessive confidence or boldness; rashness in the face of danger or opposition without regard for consequences.
The junior analyst had the temerity to challenge the CEO’s projections in front of the entire board — and was proven right six months later.
Temerity derives from the Latin temeritas, meaning “rashness” or “blind chance,” rooted in temere — “rashly” or “by chance” — suggesting action taken without looking, in the dark, without regard for what might be coming. It entered English in the 15th century carrying its full Latin sense of dangerous, heedless boldness — the kind that mistakes the absence of fear for the presence of wisdom.