Definition of DEDUCTIVE

being or provable by reasoning in which the conclusion follows necessarily from given information <using deductive reasoning we must conclude that since everyone eventually dies, sooner or later it's going to be our turn>
Synonyms a priori, deducible, derivable, inferable (also inferrible), inferential, reasoned
Related Words conjectural, hypothetical, purported, supposed, suppositional; academic (also academical), speculative, theoretical (also theoretic); logical, rational
Antonyms nondeductive

Seen & Heard

What made you want to look up deductive? Please tell us where you read or heard it (including the quote, if possible).