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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 To improve what was old or outdated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: upgraded, upgrades, upgrading

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

Antonym: downgrade

Encyclopedia: Upgrade