hang_in
1. [ verb ] be persistent, refuse to stop
Synonyms: persist hang_on hold_on persevere
Examples:

"he persisted to call me every night" "The child persisted and kept asking questions"

Related terms: continue stick_to plug obstinate ask_for_it doggedness perseverance
Similar spelling:   hanging
  hang_on
  Hannigan
  Hankin
  hangman
  Hankins
  hangnail