an argument intended to provide logically conclusive support for its conclusion

an argument in which it is thought that the premises provide a guarantee of the truth of the conclusion

an argument in which the premises are claimed to support the conclusion in such a way that it is impossible for the premises to be true and the conclusion false

an argument such that if the premises are factually true then the conclusion is guaranteed to be true

an argument such that the premises provide complete support for the conclusion

an argument where if the premises are factually true then the conclusion is guaranteed (or certain)

an argument whose conclusion follows necessarily from its premises

a rational argument whose rational conclusions follow in rational logic necessarily from rational basics

Also apodictic or demonstrative argument. An argument in which the premises are intended to guarantee, or make certain, the conclusion. To determine whether the logic of a deductive argument is successful, a good rule of thumb is to ask questions such as these: do the premises guarantee the conclusion? If the premises were true, would that make the conclusion certain

( philo.) - To reason from one statement to another by means of logical rules. Accepting the premises means you are bound logically to accept the conclusion.

involves the claim that the truth of its premises guarantees the truth of its conclusion; the terms valid and invalid are used to characterize deductive arguments. A deductive argument succeeds when, if you accept the evidence as true (the premises), you must accept the conclusion.

An argument form in which one reasons from premises that are known or assumed to be true to a conclusion that follows necessarily from these premises.