ag-, agen-, act-, agi-, agit-

1. Capable of being corrected, improved, or reformed.
2. Etymology: from corrigere "to make straight, to correct", from com, "together" + regere, "to make straight, to lead, to guide, to conduct".

1. To oppose and to mitigate the effects of something by contrary action; to check.
2. To prevent something from having an effect, or to lessen its effect.

1. Action intended to nullify the effects of some previous action.
2. Acting to make ineffective or to restrain or to neutralize the usually ill effects of something by means of an opposite force, action, or influence.

Opposing or neutralizing or mitigating an effect by a contrary action.

1. In a counteractive manner.
2. Characterized by an action in opposition to something or frustrating by a contrary action.

The inflammatory reaction in the case of a skin test in a sensitive (allergic) subject.

Cutaneous (skin) reaction.

The removal of ambiguity or of an expression whose meaning cannot be determined from its context.

One who actively opposes the pollution, or destruction by other means, of the environment.

A procedure that uses an electrical current to stop bleeding.

1. To make into law: "Congress enacted a tax reform bill that was more confusing than before it was passed."
2. To act (something) out, as on a stage: "The boy enacted the part of a parent."

1. The passing of a law by a legislative body.
2. A legal document codifying the result of deliberations of a committee or society or legislative body.
3. Acting the part of a character on stage; dramatically representing the character by speech and action and gestures.

1. A short literary composition on a single subject, usually presenting the personal view of the author.
2. Something resembling such a composition; such as, a photojournalistic essay.
3. A testing or trial of the value or nature of a thing: an essay of a students' capabilities.
4. An initial attempt or endeavor, especially a tentative attempt.
5. Etymology: from Middle French essai, "trial, attemp"; from Late Latin exagium, "a weighing, a weight"; from Latin exigere, "to weigh, to measture, to examine"; literally "to drive out"; from ex-, "out" + agere with the apparent meaning here of "to weigh".

A writer of essays.