How to say "reassuring" in Japanese

• 心強いこころづよいJLPT N1approx.Common
  i-adjectiveCovers 'reassuring' as a feeling of being heartened: another person's help, presence or backing makes you feel equal to a daunting task. It describes the comfort of having support behind you.
  僕ぼくには警察けいさつよりも何なんよりもみんながいてくれることの方ほうが心強こころづよいのですよ。↗

  For my part, having you lot with me is more reassuring than the police or anything!
• 頼もしいたのもしいJLPT N2approx.Common
  i-adjectivePrimarily means reliable, dependable, trustworthy — a quality of people or their actions. Its 'reassuring' sense is secondary: a dependable person's presence puts you at ease, rather than the word directly describing comfort.
  彼かれは頼たのもしい男おとこだ。↗

  He is a man to be depended on.
• 力強いちからづよいJLPT N2approx.Common
  i-adjectiveFor 'reassuring' in the sense of encouraging: support, backing or words that feel like a source of strength. The image is of strength being added, so it suits encouragement that stiffens your resolve.

Use 「心強い」 for the heartened feeling you get from support, 「力強い」 for encouragement that feels like a source of strength, and 「頼もしい」 chiefly for dependable people, whose reliability is reassuring.

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

• 心強いこころづよいheartening
• 頼もしいたのもしいreliable
• 気強いきづよいreassuring
• 気丈夫きじょうぶreassuring
• 心丈夫こころじょうぶsecure
• 力強いちからづよいreassuring