fallacy
UK[ˈfæləsi]US[ˈfæləsi]
n
A false or mistaken idea or belief.
n
A flaw in reasoning that makes an argument invalid or unsound.
Morpheme Breakdown
fall
acy
fall
deceive
acy
state or quality
Etymology
The word 'fallacy' originates from the Latin fallacia, meaning 'deceit, trick, artifice,' which itself derives from the verb fallere, 'to deceive.' This etymological journey reveals the core logic of the term: a fallacy is not merely an error but a deceptive quality in reasoning that can mislead. The suffix -acia evolved into English '-acy,' solidifying the abstract noun form. Thus, the modern meaning retains the ancient link to deception, now specifically applied to the deceptive flaws within logical arguments.
Analysis
Structure: fall (deceive) + acy (state or quality)
- fall: From Latin fallere (to deceive, to be mistaken). In this word, it functions as the core root conveying the sense of deception or error.
- acy: A noun-forming suffix of Latin origin (-acia, -atia), indicating a state, quality, or condition.
Examples
The argument is based on the common fallacy that correlation implies causation.
He skillfully pointed out the logical fallacy in his opponent's statement.
It's a popular fallacy to believe that more expensive products are always of higher quality.