What is the meaning of acceptable?

adjective

• Worthy of acceptance or satisfactory.
  • usage: "acceptable levels of radiation"; "performances varied from acceptable to excellent"
• Judged to be in conformity with approved usage.
  • usage: "acceptable English usage"
• Meeting requirements.
  • usage: "the step makes a satisfactory seat"
  • synonyms: satisfactory
• Adequate for the purpose.
  • usage: "the water was acceptable for drinking"