Difficult upgrades Synonyms

Difficult replaced

Definitions for Difficult


  • (adjective) requiring considerable physical or mental effort
  • (adjective) requiring exceptional skill or caution in performance or handling
  • (adjective) not easy ; requiring great physical or mental effort to accomplish or comprehend or endure

Synonyms for phrase

DU abbreviation

DU is an abbreviation for Difficult Upgrades
What does DU stand for?
DU stands for "Difficult Upgrades"