UPGRADE
Meaning of UPGRADE in English
I. verb
Synonyms: advance 2, elevate, prefer, promote
Antonyms: downgrade
II. noun
Synonyms: rise 3, boost, breakthrough, hike, increase, wax
Merriam Webster.
Collegiate thesaurus English vocabulary.
Английский энциклопедический словарь тезаурус.
2003