How to say "consistently" in Japanese

• 終始一貫しゅうしいっかんCommon
  adverbCovers 'consistently' as in behaving or holding an attitude the same way from start to finish, without change. A four-character idiom suited to describing unwavering conduct or positions over a whole course of events.
• あくまでJLPT N2approx.Common
  adverbMatches 'consistently' only loosely; its core sense is 'to the (bitter) end' or stubbornly adhering to something, as in maintaining a claim or position to the last. Not the usual choice for plain consistent behavior.
  君きみはあくまで意地いじを張はるのだね。↗

  You're never going to give in, are you?
• あくまでもCommon
  adverbThe longer form of あくまで, with the same meaning: insisting on or holding to something to the very end, often stubbornly. Also only a marginal match for 'consistently'; prefer it when emphasis on persistence is intended.
  空そらはあくまでも青あおい。↗

  The sky is as blue as blue can be.

Use 終始一貫 for consistently unchanging behavior or attitude throughout a period; use 「あくまで」/「あくまでも」 for insisting on or adhering to a stance to the very end, with 「あくまでも」 the more emphatic form.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 終始一貫しゅうしいっかんconsistently
• あくまでto the end
• あくまでもto the end
• 一貫していっかんしてconsistently
• 終始しゅうしfrom beginning to end