Synonyms for Instrumental:
adj.•influential, assisting (adjective)
helpful, conducive, contributory, serviceable, of service, useful.
valuable, essential, principle, effectual, useful, helpful.
all-purpose, fitting, effectual, advantageous, at hand, handy, applicable, practical, utilitarian, suitable, effective, serviceable, applied, appropriate, reusable, practicable, utilizable, useful, helpful, usable, beneficial, expedient, convenient, commodious, available, functional, versatile, employable, multipurpose.
n.conducive, harmonic, flat, bluesy, classical, necessary, of service, funky, bass, atonal, contributory, acoustic, discordant. chant, cantata, andante, adagio, allegro. decisive, driving, productive, deciding, enabling, causal, formative, causative. •instrumental (noun)
carol, music, chorus, concert, score, melody, sonata, harmony, quartet, bebop, ditty, hymn, song, concerto, aria, lullaby, composition, air, arrangement, jazz, lyric, ballad, syncopation, ballet, serenade, psalm, vocalization, symphony, tune, blues.
conducive, formative, driving, deciding. enabling, decisive, contributory, causal, causative. productive. •Other relevant words:
contributory, of service, implemental, enabling, causal, causative, conducive.