- 1. [adj-na, n] simple (and honest); simple-hearted; unsophisticated
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) | しつぼくな | (shitsubokuna) |
| Non-past, plain | しつぼくだ | (shitsubokuda) |
| Non-past, polite | しつぼくです | (shitsubokudesu) |
| Past, plain | しつぼくだった | (shitsubokudatta) |
| Past, polite | しつぼくでした | (shitsubokudeshita) |
| Negative, plain | しつぼくじゃない | (shitsubokujanai) |
| Negative, polite | しつぼくじゃないです | (shitsubokujanaidesu) |
| Past negative, plain | しつぼくじゃなかった | (shitsubokujanakatta) |
| Past negative, polite | しつぼくじゃなかったです | (shitsubokujanakattadesu) |
| Te-form | しつぼくで | (shitsubokude) |
| Conditional (―nara) | しつぼくなら | (shitsubokunara) |