How to say "mechanical" in Japanese

• メカニックCommon
  na-adjectiveListed as 'mechanical', but this is chiefly the noun for a mechanic who repairs cars or machines; as an adjective meaning 'mechanical' it is marginal, and it is seldom the word you want.
• 無意識むいしきCommon
  na-adjective, no-adjectiveCovers 'mechanical' in the sense of done without conscious thought, alongside its senses 'unconscious' and 'automatic'; it describes actions performed on autopilot, such as routine work done while the mind is elsewhere.
  お母かあさんは無意識むいしきに椅子いすをつかんだ。↗

  Unconsciously my mom took hold of the chair.

For 'mechanical' in the sense of done without conscious thought, 無意識 is the choice; 「メカニック」 is really the noun for a mechanic, and as an adjective it is only a marginal way to say 'mechanical'.

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

• メカニカルmechanical
• 力学的りきがくてきmechanical
• 機械的きかいてきmechanical
• 機械式きかいしきmechanical
• メカニックmechanical
• 無意識むいしきunconscious