A more emphatic adjective is perjinkety ; and it has the noun perjinkity , defined as  a nicety. 
( ( ( ( ( ( A ( ( more emphatic ) adjective ) ) ( is perjinkety ) ) ; ) and ) ( it ( has ( ( ( the ( noun perjinkity ) ) , ) ( defined ( as ( a nicety ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT A) (ADJP (RBR more) (JJ emphatic)) (NN adjective)) (VP (VBZ is) (ADJP (JJ perjinkety)))) (: ;) (CC and) (S (NP (PRP it)) (VP (VBZ has) (NP (NP (DT the) (NN noun) (NN perjinkity)) (, ,) (VP (VBN defined) (PP (IN as) (NP (DT a) (NN nicety))))))) (. .)))
Perjinkety can not be used as an adjective.
( Perjinkety ( ( ( can not ) ( be ( used ( as ( an adjective ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Perjinkety)) (VP (MD can) (RB not) (VP (VB be) (VP (VBN used) (PP (IN as) (NP (DT an) (NN adjective)))))) (. .)))