The best replacement for initial is signature.

The best alternatives to initial are rated as following:
★★★★★  signature
★★★  sign
★★★  mean lumens
★★★  initials
★  subsequent
★  final velocity
★  preliminary
  middle name
  monogram
  inherit
  signature legal
  head final
  full middle name

Your alternative for initial is not listed? Suggest!
Speaking about initial, one probably shouldn't forget about birthstone necklace.

Other search terms related to initial and their ratings are:
★★★★★ birthstone necklace
★★★ diamond pendant
★★ birthstone necklaces
birthstone
You have in mind a companion for initial and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of initial in all years. Click on graph for more.
initial
signature
sign