unfaltering
1. [ adjective ] marked by firm determination or resolution; not shakable
Synonyms: firm unshakable unwavering unbendable steady steadfast
Examples:

"firm convictions" "a firm mouth" "steadfast resolve" "a man of unbendable perseverence" "unwavering loyalty"

Related terms: resolute
Similar spelling:   unfalteringly
  unfailing
  unflattering
  unfailingly
  unifoliate
  univalve
  unifilar
  univalent
  unavailing