Synonyms of the word 
TRILINGUAL → MULTILINGUAL
trilingual
- adj. Able to read or speak three languages.
- adj. Expressed or written in three languages.
- n. A trilingual person.
multilingual
- adj. Pertaining to multiple languages.
- adj. (of a person) able to communicate fluently in multiple languages.
- n. A polyglot.
If you are interested in words, visit the following sites :
- wiktionary.org/trilingual For complete definition of a word
- 1word.ws/trilingual to play with words, suffixs, prefixs, etc.