strengthon Basic wordsalso onCEFR Upper intermediate (B2)? CEFR Advanced (C1)? Academic Vocabulary List (AVL)? Academic Chunk List (ACL)? Contributions (SIG)? Band 2 (BND2)? Band 3 (BND3)? strengthen strengthen(verb) afianzar,consolidar,fortalecer strengthening strengthening(verb) afianzar,consolidar,fortalecer strengthening strengthening(noun) fortalecimiento Forms verbnoun strengthen strengthening strengthening