強力|きょうりょくkyouryoku[0]heiban (flat)

1. na-adjective, nounpowerful; strong
   日本にっぽんの軍隊ぐんたいは非常ひじょうに強力きょうりょくだった。↗

   Japan's army was very powerful.

• SynonymパワフルNeutralA loanword for being powerful and full of energy; used mostly of people and machines, while 「強力」 stresses great strength or effectiveness.
• Synonym強大きょうだいWrittenWritten word for power that is vast as well as strong, as in 「強大な国家」; it combines strength with scale, unlike 「強力」.
• Synonym強いつよいNeutralThe everyday all-purpose word for strong, sturdy or skilled; 「強力」 is narrower, pointing to great power or effectiveness.
• Synonym強烈きょうれつNeutralFor strong stimulation or impressions, as in 「強烈な日差し」 and 「強烈な印象」; 「強力」 is about power or effectiveness.
• Synonym有力ゆうりょくNeutralMeans influential, or promising and likely to win, as in 「有力候補」 (a strong candidate); 「強力」 points to power itself, not standing or prospects.
• Synonym力強いちからづよいNeutralSuggests visible vigor and reassurance, as in 「力強い声」; it conveys energy and confidence rather than raw strength like 「強力」.
• Synonym強豪きょうごうNeutralA noun for powerhouse teams or players, as in 「強豪校」; it names a strong competitor, while 「強力」 describes strength itself.
• Related強いつよいNeutralThe everyday all-purpose word for strong, sturdy or skilled; 「強力」 is narrower, pointing to great power or effectiveness.
• Related屈強くっきょうWrittenWritten word mainly for a powerfully built, muscular body, as in 「屈強な男」; it can also suggest mental toughness, while 「強力」 stresses power or effectiveness.
• Related頑丈がんじょうNeutralDescribes solid, well-built objects or a sturdy physique, stressing that something is hard to break; 「強力」 is about strength of power or effect.
• Related手ごわいてごわいCasualColloquial for an opponent who is hard to beat or handle; it stresses being a tough customer, not simply having great power like 「強力」.
• Related頑強がんきょうWrittenWritten word for tenacious, unyielding persistence, as in holding out or refusing to give in; 「強力」 describes strength itself, not willpower.
• Related強靭きょうじんWrittenWritten word for toughness and resilience, as in 「強靭な精神」; it suggests something bends without breaking, unlike the sheer power of 「強力」.
• Related強度きょうどNeutralA noun naming the degree of strength or intensity; 「強力」 instead describes power or effect as strong.
• RelatedきついNeutralCovers tight, strict or intense, as in 「きつい香り」; it stresses the burden something imposes, where 「強力」 just says power is great.
• Related強硬きょうこうNeutralRefers to a hard-line, uncompromising stance, as in 「強硬手段」; 「強力」 speaks of power or effect, not attitude.
• Related猛烈もうれつNeutralDescribes fierce momentum or an extreme degree, as in 「猛烈な暑さ」; it stresses intensity rather than the power or effect of 「強力」.
• Related丈夫じょうぶNeutralCovers good health and durable, long-lasting objects; 「強力」 never means healthy, and is about power or effect.
• Related精強せいきょうWrittenRare even in written style; describes elite, formidable forces such as troops, a much narrower use than 「強力」.
• Related手強いてづよいNeutralThe same word as the previous entry, written 「手強い」; it can also call a problem tough or tricky, while 「強力」 only says power is great.
• RelatedごついCasualColloquial for big, rough and unrefined things, as in 「ごつい手」; it is about rugged bulk, not strength or effectiveness.
• Antonym微弱びじゃくWrittenWritten word for faint, feeble signals or forces, as in 「微弱な電波」; it is the direct opposite of 「強力」.
• Antonym弱力WrittenA rare written word for weak force; it is not a common antonym of 「強力」 — say 「弱い」 or 「微弱」 instead.

Use 「強力」 for great power or effectiveness. For everyday strength in the broadest sense say 「強い」; for sturdily built, hard-wearing things or bodies use 「頑丈」 or 「丈夫」; for strong stimulation or impressions 「強烈」; for a hard-line stance 「強硬」; for a tough opponent 「手ごわい」. Written style favors 「屈強」 for brawn, 「頑強」 for tenacity, 「強大」 for vast power, and 「微弱」 as the opposite. 「パワフル」 adds a lively, energetic nuance for people and machines.

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

1. （きょうりょく / 古こ:ごうりき）力ちからが強つよいこと。また、強つよい力ちから。剛力ごうりき。
2. （きょうりょく / 古こ:ごうりき）力ちからが強つよい。
3. （きょうりょく）作用さようや影響えいきょうが強つよい。有力ゆうりょくである。