How do you say “first and foremost” in Vietnamese?

Vietnamese words for “first and foremost”

• trước nhấtListenadverb
  Hanoi [t͡ɕɨək̚˧˦ ɲət̚˧˦] · Saigon [ʈɨək̚˦˥ ɲək̚˦˥]trước rising nhất rising

  first of all; first and foremost

  for “first and foremost” meaning: Primarily; most importantly.

• trước hếtListenadverb
  Hanoi [t͡ɕɨək̚˧˦ het̚˧˦] · Saigon [ʈɨək̚˦˥ həːt̚˦˥]trước rising hết rising

  firstly; first of all

  for “first and foremost” meaning: Primarily; most importantly.