unalterably
1. [ adverb ] in an unalterable and unchangeable manner
Synonyms: unassailably immutably unchangeably
Examples:

"his views were unchangeably fixed"

Related terms: unchangeable unalterable ironclad immutable immutable ironclad
Similar spelling:   unalterable
  unalterability
  unilaterally
  unliterary
  unilateral
  unaltered
  unleaded
  unhealed
  unilateralist
  unilateralism