強固・鞏固|きょうこkyouko[1]atamadaka (head-high)
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Which spelling to use
強固強固 is the more common written form and the recommended choice for beginners; use it when you need to write this word.
鞏固鞏固 is a rarely used written form. You will seldom see it, so learners should generally choose 強固 instead.
Definitions
- na-adjectivefirm; strong; solid; stable
Conjugation
| Plain form | 強固（きょうこ） |
|---|---|
| Polite (desu) | 強固です（きょうこです） |
| Negative (dewa nai) | 強固ではない（きょうこではない） |
| polite (dewa arimasen) | 強固ではありません（きょうこではありません） |
| Past (datta) | 強固だった（きょうこだった） |
| Past negative (dewa nakatta) | 強固ではなかった（きょうこではなかった） |
| Te form (de) | 強固で（きょうこで） |
| Adverbial (ni) | 強固に（きょうこに） |
| Conditional (nara) | 強固なら（きょうこなら） |
Common forms generated by rule; see the senses for honorific or irregular usage.
Synonyms & antonyms
- Synonym堅固けんごWrittenWritten/formal. Describes solid buildings or firm resolve, as in 「堅固な城」; 強固 leans toward unshakable wills, foundations and organizations.
- Synonym頑丈がんじょうNeutralNeutral. Describes sturdy objects or strong physiques, as in 「頑丈な箱」; 強固 is about firm wills and relationships rather than physical sturdiness.
- Synonym堅牢けんろうWrittenWritten/formal. Describes sturdy, durable buildings, as in 「堅牢な造り」; 強固 leans toward abstract firmness.
- RelatedしっかりCasualColloquial adverb for holding firmly or acting reliably, as in 「しっかり掴む」; 強固 is the more written, formal choice.
- Related揺るぎないゆるぎないWrittenWritten/formal adjective meaning unshakable, as in 「揺るぎない信念」; very close in meaning to 強固.
- Related安定したあんていしたNeutralNeutral. Describes a state that stays stable over time, as in 「安定した経営」; 強固 stresses being firmly fixed and hard to shake.
- Antonym脆弱ぜいじゃくWrittenWritten/formal antonym: fragile and easily broken; the opposite of 強固 on the firm–fragile axis.
- Antonym不安定ふあんていNeutralNeutral antonym: unstable, unsteady; the opposite of 強固 on the stable–wavering axis.
Use 「強固」 for firm, unshakable wills, foundations and organizations, as in 「強固な意志」「強固な基盤」. For solid buildings pick 「堅固」 or 「堅牢」, for sturdy objects or physiques 「頑丈」; 「揺るぎない」 is a close written rival. Opposites: 「脆弱」, 「不安定」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese definitions
Kanji in this word
English equivalents
See also
