1. (noun)accompaniment, concomitant, attendant, co-occurrence an event or situation that happens at the same time as or in connection with another Synonyms: concurrence, tender, co-occurrence, attendee, meeter, attender, conjunction, accompaniment, coincidence, support, attendant, backup, concomitant, musical accompaniment, escort, complement
2. (noun)accompaniment, musical accompaniment, backup, support a musical part (vocal or instrumental) that supports or provides background for other musical parts Synonyms: fill-in, financial backing, reenforcement, reinforcement, patronage, escort, living, supporting, complement, keep, accompaniment, livelihood, support, bread and butter, co-occurrence, backup man, reliever, musical accompaniment, backing, financial support, backup, sustenance, funding, championship, concomitant, computer backup, relief, stand-in, documentation, attendant, substitute
3. (noun)complement, accompaniment something added to complete or embellish or make perfect Synonyms: co-occurrence, full complement, accompaniment, support, attendant, backup, complement, musical accompaniment, escort, concomitant
4. (noun)escort, accompaniment the act of accompanying someone or something in order to protect them Synonyms: date, escort, accompaniment, support, attendant, backup, complement, musical accompaniment, bodyguard, concomitant, co-occurrence
Synonyms, Thesaurus & Antonyms of 'accompaniment'
English Synonyms and Antonyms
1. accompaniment An adjunct (something joined to) constitutes no real part of the thing or system to which it is joined, tho perhaps a valuable addition; an appendage is commonly a real, tho not an essential or Synonyms: appendage, accessory, addition, appurtenance, concomitant, accompaniment, adjunct, attachment, extension, addendum, appendix, auxiliary, supplement Antonyms: main body, original, total, whole
Synonyms for accompaniment 
