- 1. [adj-na, n] love of learning
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) | とくがくな | (tokugakuna) |
| Non-past, plain | とくがくだ | (tokugakuda) |
| Non-past, polite | とくがくです | (tokugakudesu) |
| Past, plain | とくがくだった | (tokugakudatta) |
| Past, polite | とくがくでした | (tokugakudeshita) |
| Negative, plain | とくがくじゃない | (tokugakujanai) |
| Negative, polite | とくがくじゃないです | (tokugakujanaidesu) |
| Past negative, plain | とくがくじゃなかった | (tokugakujanakatta) |
| Past negative, polite | とくがくじゃなかったです | (tokugakujanakattadesu) |
| Te-form | とくがくで | (tokugakude) |
| Conditional (―nara) | とくがくなら | (tokugakunara) |