How to say "deep-rooted" in Japanese

• 根深いねぶかいCommon
  i-adjectiveThe default choice: describes problems, prejudices, fears, and habits that are deeply ingrained and hard to eliminate. Fits most contexts where English 'deep-rooted' or 'ingrained' works.
  彼かれらは多おおくの根深ねぶかい迷信めいしんに打ち勝うちかった。↗

  They overcame many inveterate superstitions.
• 抜きがたいぬきがたい
  i-adjectiveCovers a deep-rooted suspicion, doubt, or similar feeling that cannot easily be shaken off. A less common word, so learners should reach for it mainly with such emotional or mental states.
• 抜くべからざるぬくべからざる
  expression, pre-noun adjectivalAlso means a deep-rooted suspicion or the like that resists being dispelled. A literary, less common expression, so it is seldom the word learners want in ordinary speech or writing.
• 根が深いねがふかい
  expression, i-adjectiveAn alternative way to say the same thing as 根深い: deep-seated, deep-rooted problems or traits. Less common in usage, but entirely natural when you want to stress how far the roots go.

Use 「根深い」 as the general everyday word for ingrained problems or attitudes; 「根が深い」 is a less common equivalent; 「抜きがたい」 and 「抜くべからざる」 describe suspicions and the like that cannot be dispelled.

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

• 根深いねぶかいdeep-rooted
• 抜きがたいぬきがたいdeep-rooted (suspicion, etc.)
• 抜くべからざるぬくべからざるdeep-rooted (suspicion, etc.)
• 根が深いねがふかいdeep-seated