unending
1. [ adjective ] continuing forever or indefinitely
Synonyms: eternal perpetual everlasting unceasing ageless
Examples:

"the ageless themes of love and revenge" "eternal truths" "life everlasting" "hell's perpetual fires" "the unending bliss of heaven"

Related terms: permanent
Similar spelling:   unendingly
  unwinding
  unended
  unweaned
  unendowed
  unwind
  unhand
  unwound
  unnamed