- 1. [n, adj-na] mystery; curiosity; strangeness; monstrosity
- 2. [n] ghost; monster; apparition; phantom; spectre; specter; goblin
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) | かいいな | (kaiina) |
| Non-past, plain | かいいだ | (kaiida) |
| Non-past, polite | かいいです | (kaiidesu) |
| Past, plain | かいいだった | (kaiidatta) |
| Past, polite | かいいでした | (kaiideshita) |
| Negative, plain | かいいじゃない | (kaiijanai) |
| Negative, polite | かいいじゃないです | (kaiijanaidesu) |
| Past negative, plain | かいいじゃなかった | (kaiijanakatta) |
| Past negative, polite | かいいじゃなかったです | (kaiijanakattadesu) |
| Te-form | かいいで | (kaiide) |
| Conditional (―nara) | かいいなら | (kaiinara) |