[syn: cosmopolitan, ecumenical, oecumenical, general, universal, worldwide, world-wide]
The Collaborative International Dictionary of English v.0.48:
Ecumenic \Ec`u*men"ic\, Ecumenical \Ec`u*men"ic*al\, a. [L.
   oecumenicus, Gr. ? (sc. ?) the inhabited world, fr. ? to
   inhabit, from o'i^kos house, dwelling. See Economy.]
   General; universal; in ecclesiastical usage, that which
   concerns the whole church; as, an ecumenical council.
   [Written also [oe]cumenical.]
   [1913 Webster]
   Ecumenical Bishop, a title assumed by the popes.
   Ecumenical council. See under Council.
      [1913 Webster]
WordNet (r) 3.0 (2006):
ecumenical
    adj 1: concerned with promoting unity among churches or
           religions; "ecumenical thinking"; "ecumenical
           activities"; "the ecumenical movement" [syn: ecumenic,
           oecumenic, ecumenical, oecumenical]
    2: of worldwide scope or applicability; "an issue of
       cosmopolitan import"; "the shrewdest political and ecumenical
       comment of our time"- Christopher Morley; "universal
       experience" [syn: cosmopolitan, ecumenical,
       oecumenical, general, universal, worldwide, world-
       wide]
Moby Thesaurus II by Grady Ward, 1.0:
82 Moby Thesaurus words for "ecumenical":
   all-comprehending, all-comprehensive, all-covering, all-embracing,
   all-encompassing, all-filling, all-including, all-inclusive,
   all-pervading, allover, broad, broad-gauged, broad-minded,
   catholic, coacting, coactive, coadjutant, coadjuvant, coefficient,
   collaborative, collective, collectivist, collectivistic, collusive,
   combined, commensal, common, communal, communalist, communalistic,
   communist, communistic, communitarian, comprehensive, concerted,
   concordant, concurrent, concurring, conniving, cooperant,
   cooperating, cooperative, cosmic, cosmopolitan, country-wide,
   ecumenic, ecumenistic, fellow, galactic, general, global,
   harmonious, harmonized, heaven-wide, inclusive, international,
   joint, mutual, national, noncompetitive, nondenominational,
   noninsular, nonsectarian, planetary, reciprocal, spacious of mind,
   symbiotic, synergetic, synergic, synergistic, total, unbigoted,
   uncompetitive, unfanatical, unhidebound, universal, unparochial,
   unprovincial, wide, wide-minded, world-wide, worldwide