effective

The definition of effective is something that is able to achieve a desired outcome or end result.

(adjective)

An example of effective is a good solid argument that lets you convince others of your point.

See effective in Webster's New World College Dictionary

adjective

Origin: ME & OFr effectif < L effectivus

noun

a soldier, unit, etc. equipped and ready for combat: usually used in pl.

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See effective in American Heritage Dictionary 4

adjective

a. Having an intended or expected effect.
b. Producing a strong impression or response; striking: gave an effective performance as Othello.
Operative; in effect: The law is effective immediately.
Existing in fact; actual: a decline in the effective demand.
Prepared for use or action, especially in warfare.

noun

A soldier or a piece of military equipment that is ready for combat: “The ‘company’ was no more than two platoons of effectives” (Tom Clancy).

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