A member state fails to meet the convergence criteria for participation in stage 3 Derogation can be lifted if the member state subsequently meets the criteria
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law; "any derogation of the common law is to be strictly construed"
Individual states may enter into a derogation (opting out) in respect of certain Articles during times of war or other national emergency The UK government has entered into a derogation in respect of Northern Ireland, which has the effect of limiting the effect of certain Rights under the Convention
[ 'der-&-"gAt ] (verb.) 15th century. From the Latin derogare (“to annul, repeal part of a law, take away, detract from”), from de- (“from”) + rogare (“to propose a law, ask”). Compare abrogate, interrogate.