How to say "solution" in Japanese

• 解決かいけつJLPT N3approx.Common
  noun, suru verb, transitive verb, intransitive verbThe solution to a problem, trouble, or dispute: it names the settling or resolving of the matter itself — the problem-solving sense, not the answer to a question.
  その問題もんだいはまだ解決かいけつされていない。↗

  The problem is not settled yet.
• 溶液ようえきJLPT N1approx.Common
  nounA solution in the physical sense: a liquid in which a substance has been dissolved. Use this when 'solution' means the fluid itself, not the solving of a problem.
  リトマス紙しで溶液ようえきの液性えきせい（酸性さんせい、中性ちゅうせい、塩基性えんきせい）を調しらべるときは、リトマス紙しをすべて溶液ようえきに浸ひたすのではなく、紙かみの先端せんたんの部分ぶぶんだけを浸ひたします。↗

  When investigating the pH (acidic, neutral, alkaline) of a liquid, don't soak the litmus paper completely in the liquid but just put the end of the paper in it.
• 解答かいとうJLPT N2approx.Common
  noun, suru verb, intransitive verbThe answer or solution to a question or exam problem — the answer itself, as opposed to the settling of a problem or dispute.
  あなたの解答かいとうには私わたしたちとしてはまったく不満ふまんだ。↗

  Your answer is anything but satisfactory to us.
• 溶剤ようざいCommon
  nounFor the sense 'solution' this is seldom the word you want: it really means 'solvent' — a substance that dissolves another — or 'flux'.
  その液えきから溶剤ようざいを揮発きはつさせる。残のこるのは、香かおり成分せいぶんと植物しょくぶつワックスの塊かたまり。↗

  Vaporise the solvent from the liquid. What's left is the perfume component and a lump of vegetable wax.
• 溶解ようかいCommon
  noun, suru verb, transitive verb, intransitive verbNames the dissolving itself — dissolution, the process rather than the resulting liquid; for the liquid that forms, 溶液 is the word.
  空気くうき中ちゅうの酸素さんそは水みずに溶解ようかいする。↗

  Oxygen from the air dissolves in water.

Use 解決 for solving a problem or dispute, 解答 for the answer to a question, 溶液 for a solution as a liquid, 溶解 for the dissolving process, and 溶剤 essentially means 'solvent'.

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

• 解決かいけつsettlement
• 溶液ようえきsolution (liquid)
• 解答かいとうanswer
• 溶剤ようざいsolvent
• 溶解ようかいdissolution
• 解決策かいけつさくsolution
• 解決方法かいけつほうほうway of solving (a problem)
• 解かいsolution (of an equation, inequality, etc.)
• ソリューションsolution (to a problem)
• 解式かいしきsolution
• 解決法かいけつほうsolution
• 溶体ようたいsolution
• 溶解液ようかいえきsolution (liquid)
• 解消法かいしょうほうsolution (to a problem)
• 解法かいほう(key to) solution
• 答えこたえanswer