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1. Rate higher; raise in value or esteem
   - uprate
    
2. To improve what was old or outdated
   "I've upgraded my computer so I can run better software"; "The company upgraded their personnel"
    
3. Give a promotion to or assign to a higher position
   "I got upgraded after many years of hard work";
   - promote, advance, kick upstairs, raise, elevate
    
4. Get better travel conditions
   "I upgraded to First Class when Coach Class was overbooked"
    
5. Give better travel conditions to
   "The airline upgraded me when I arrived late and Coach Class was full"

1. [N. Amer] An upward slope or grade (as in a road)
   - ascent, acclivity, rise, raise, climb
    
2. Software that provides better performance than an earlier version did
    
3. A reservation that is improved
   "I got an upgrade to first class when coach class was full"
    
4. [N. Amer] The property possessed by a slope or surface that rises
   - rise, rising slope
    
5. Hardware that provides better performance than an earlier version did
    
6. The act of improving something (especially machinery) by raising it to a higher grade (as by adding or replacing components)
   "the power plant received a new upgrade"

Derived forms: upgrading, upgrades, upgraded

Type of: ameliorate, amend, assign, better, computer hardware, computer software, delegate, depute, designate, grade, hardware, improve, improvement, incline, meliorate, mend, order, package, place, range, rank, rate, reservation, side, slope, software, software package, software program, software system

Antonym: downgrade

Encyclopedia: Upgrade