syllogistic
Word family
- syllogismnounC2
- syllogisticallyadverbC2
Synonym discussion
Sense: adjective/1
Syllogistic, deductive, and logical all relate to reasoning, but they operate at different levels of specificity. Syllogistic describes the strict, two-premise form of argument invented by Aristotle — a conclusion that is guaranteed if the premises are true (e.g., all humans are mortal; Socrates is human; therefore Socrates is mortal). Deductive is broader: any reasoning that moves from a general rule to a specific instance qualifies as deductive, whether or not it follows the formal two-premise shape. Logical is the broadest of the three; it covers any thinking that follows coherent rules, including inductive reasoning, mathematical proof, and everyday problem-solving. In a philosophy paper, one might write 'the syllogistic structure of the argument' to highlight its classical form, 'deductive reasoning' to contrast with induction, and 'logical' simply to say that the reasoning is sound.
Common collocations
Etymology
The word syllogistic comes from the Greek syllogistikos, meaning 'relating to inference'. This in turn comes from syllogizesthai, which combines syn- ('together') and logizesthai ('to reason'), from logos ('word, reason, account'). The term entered English through Latin syllogisticus and French syllogistique, and has been used in logic since Aristotle first formalised the syllogism in his Organon around 350 BCE.