systemon Basic wordsalso onCEFR Intermediate (B1)? CEFR Upper intermediate (B2)? CEFR Mastery level (C2)? Academic Vocabulary List (AVL)? Band 2 (BND2)? sistema system system(noun) sistema systematic systematic(adjective) sistemático systematically systematically(adverb) sistemáticamente Forms nounadjectiveadverb system systematic systematically