The present invention concerns compounds of formula the N-oxide forms, the pharmaceutically acceptable addition salts and stereochemically isomeric forms thereof, wherein n is 0, 1 or 2; m is 1 or 2, provided that if m is 2, then n is 1; p is 0, 1 or 2; ═Q is ═O or ═NR3; X is a covalent bond or a bivalent radical of formula —O—, —S—, —NR3—; R1 is Ar1; Ar1C1-6alkyl or di(Ar1)C1-6alkyl, wherein each C1-6alkyl group is optionally substituted with hydroxy, C1-4alkyloxy, oxo or a ketalized oxo substituent of formula —O—CH2—CH2—O— or —O—CH2—CH2—CH2—O—; R2 is Ar2; Ar2C1-6alkyl; Het or HetC1-6alkyl; R3 is hydrogen or C1-6alkyl; R4 is hydrogen; C1-4alkyl; C1-4aklyloxyC1-4alkyl; hydroxyC1-4alkyl; carboxyl; C1-4aklyloxycarbonyl or Ar3; R5 is hydrogen; hydroxy; Ar3; Ar3C1-6alkyloxy; di(Ar3)C1-6alkyloxy; Ar3C1-6alkylthio; di(Ar3)C1-6alkylthio; Ar3C1-6alkylsulfoxy; di(Ar3)C1-6alkylsulfoxy; Ar3C1-6alkylsulfonyl; di(Ar3)C1-6alkylsulfonyl; —NR7R8; C1-6alkyl substituted with —NR7R8; or a radical of formula (a-1) or (a-2); R4 and R5 may also be taken together; R6 is hydrogen; hydroxy; C1-6alkyloxy; C1-6alkyl or Ar3C1-6alkyl; Ar1, Ar2 and Ar3 are phenyl or substituted phenyl; Ar2 is also naphtalenyl; and Het is an optionally substituted monocyclic or bicyclic heterocycle; as substance P antagonists; their preparation, compositions containing them and their use as a medicine.