1up·grade 
/ˌʌpˈgreɪd/ verb
up·grades; up·grad·ed; up·grad·ing /ˌʌpˈgreɪd/ verb 1 a [+ obj] : to make (something) better by including the most recent information or improvements
▪ This course will help you to upgrade your computer skills. ▪ Airports have upgraded security. ▪ They've upgraded the quality of their service. ▪ The city is upgrading the sewage treatment plant. ▪ The office is upgrading the telephone system. ▪ They upgraded the hotel to attract more business patrons.
b [no obj] : to choose to have or use something more modern, useful, etc. — often + to ▪ You might want to upgrade to a cable modem. ▪ We reserved a compact car, with the option of upgrading to a midsize car. 2 : to get something (such as a seat on an airplane or a room in a hotel) that is better than what you had originally — often + to [no obj] ▪ We were able to upgrade to first class. [+ obj] ▪ Our seats were upgraded to first class. [=we were given first-class seats] ▪ We had reserved a double room, but the hotel upgraded us to a suite. 3 [+ obj] : to give (someone or something) a higher rank or grade — often + to ▪ They upgraded my job classification to level four, which means I get a pay increase. ▪ The restaurant was upgraded from three to four stars. ▪ The storm has been upgraded to a hurricane. ▪ The doctors upgraded the patient's condition from “serious” to “good.” — opposite downgrade
▪ This course will help you to upgrade your computer skills. ▪ Airports have upgraded security. ▪ They've upgraded the quality of their service. ▪ The city is upgrading the sewage treatment plant. ▪ The office is upgrading the telephone system. ▪ They upgraded the hotel to attract more business patrons.
b [no obj] : to choose to have or use something more modern, useful, etc. — often + to ▪ You might want to upgrade to a cable modem. ▪ We reserved a compact car, with the option of upgrading to a midsize car.
— up·grad·able or up·grade·able /ˌʌpˈgreɪdəbəl/ adjective
▪ upgradable hardware
/ˌʌpˈgreɪdəbəl/ adjective ▪ upgradable hardware
