- 1. [adj-na, n] neat and clean; tidy; trim
Conjugation — Adjective (―na)
This word itself does not change -- these are forms of the copula だ ("to be") attached to it.
| Attributive (before a noun) | せいそな | (seisona) |
| Non-past, plain | せいそだ | (seisoda) |
| Non-past, polite | せいそです | (seisodesu) |
| Past, plain | せいそだった | (seisodatta) |
| Past, polite | せいそでした | (seisodeshita) |
| Negative, plain | せいそじゃない | (seisojanai) |
| Negative, polite | せいそじゃないです | (seisojanaidesu) |
| Past negative, plain | せいそじゃなかった | (seisojanakatta) |
| Past negative, polite | せいそじゃなかったです | (seisojanakattadesu) |
| Te-form | せいそで | (seisode) |
| Conditional (―nara) | せいそなら | (seisonara) |