Synonyms for Bilingual:

n.

anglophone, encode, fidelity, communicative competence, fluency, code switching, fluent, false beginner. bilingual (noun)
multilingual.

Other synonyms:

code switching, false beginner, fluent, fluency, communicative competence. fidelity, anglophone. encode. Other relevant words:
fluency, anglophone, fidelity, encode, fluent.

Usage examples for bilingual

  1. Crossman added, for in the North Country not many of the habitants are bilingual – O. Henry Memorial Award Prize Stories of 1921 by Various
  2. The girls are almost always pretty, ignorant of the world, kind and agreeable and generally bilingual they prattle innocently both in French and English. – 'Twixt Land & Sea by Joseph Conrad