How to say "continual" in Japanese

• ひっきりなし
  no-adjective, na-adjectiveCovers 'continual' as unceasing, incessant: activity that keeps up with no break, one thing after another, as with calls or visitors arriving without pause; usually written in kana alone.
  このひっきりなしの騒音そうおんは頭あたまにくる。↗

  This incessant noise drives me mad.
• しきり
  na-adjectiveMatches 'frequent, repeated, constant': it stresses something happening over and over rather than flowing without interruption, as when someone asks or apologizes again and again; usually written in kana alone.

Both are less common choices: pick 「ひっきりなし」 for activity continuing without any break, one thing after another, and 「しきり」 for actions repeated over and over, stressing frequency rather than an unbroken flow.

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

• ひっきりなしcontinuous
• しきりfrequent