What is the meaning of insistence?

noun

• Continual and persistent demands.
  • synonyms: insisting
• The state of demanding notice or attention.
  • usage: "the insistence of their hunger"; "the press of business matters"
  • synonyms: imperativeness, insistency, press, pressure
• The act of insisting on something.
  • usage: "insistence on grammatical correctness is a conservative position"
  • synonyms: insistency