Synonyms to combined effort

accompaniment, accession, accessory, accordance, addenda, addendum, additament, addition, additive, additory, additum, adjunct, adjuvant, agreement, alliance, alto, annex, annexation, appanage, appendage, appendant, appurtenance, appurtenant, association, attachment, augment, augmentation, baritone, bass, basso continuo, basso ostinato, bassus, cahoots, canto, cantus, cantus figuratus, cantus planus, co-working, coaction, coda, coetaneity, coetaneousness, coevalneity, coevalness, coexistence, coincidence, collaboration, collectivity, collusion, combination, complement, concert, concerted action, concomitance, concomitant, concordance, concourse, concurrence, confluence, conjunction, consilience, conspiracy, contemporaneity, contemporaneousness, continuation, continuo, contralto, cooperation, corollary, correspondence, descant, drone, extension, extrapolation, figured bass, fixture, ground bass, increase, increment, isochronism, junction, line, offshoot, parasitism, part, pendant, plain chant, plain song, prick song, reinforcement, saprophytism, side effect, side issue, simultaneity, so