適法|てきほうtekihou[0]heiban (flat)
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- na-adjective, no-adjectivelegal; lawful; legitimate
Conjugation
| Plain form | 適法(てきほう) |
|---|---|
| Polite (desu) | 適法です(てきほうです) |
| Negative (dewa nai) | 適法ではない(てきほうではない) |
| polite (dewa arimasen) | 適法ではありません(てきほうではありません) |
| Past (datta) | 適法だった(てきほうだった) |
| Past negative (dewa nakatta) | 適法ではなかった(てきほうではなかった) |
| Te form (de) | 適法で(てきほうで) |
| Adverbial (ni) | 適法に(てきほうに) |
| Conditional (nara) | 適法なら(てきほうなら) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym合法ごうほうNeutralThe everyday word for legal, more common than 「適法」; 「適法」 appears mainly in legal documents and stresses conformity with legal provisions.
- Synonym合法的ごうほうてきNeutralAdjectival form meaning legal; typically modifies means or actions, as in 「合法的な手段」. 「適法」 again is confined largely to legal writing.
- Antonym違法いほうNeutralThe most common antonym: illegal, in violation of the law. Direct opposite of 「適法」.
- Antonym不法ふほうNeutralUnlawful or illegal, but also unreasonable or outrageous, as in 「不法侵入」. Opposite of 「適法」.
- Antonym非合法ひごうほうNeutralIllegal, often describing underground or clandestine activity. Opposite of 「適法」.
In legal documents, 「適法」 is the word for conforming to legal provisions; in everyday speech, 「合法」 is the usual choice. The main opposites are 「違法」 and 「不法」; use 「非合法」 for underground activity.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


