- 1. [adj-na] unsophisticated; ruggedly honest; artless; unaffected; simple; naive
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) | ぼくとつな | (bokutotsuna) |
| Non-past, plain | ぼくとつだ | (bokutotsuda) |
| Non-past, polite | ぼくとつです | (bokutotsudesu) |
| Past, plain | ぼくとつだった | (bokutotsudatta) |
| Past, polite | ぼくとつでした | (bokutotsudeshita) |
| Negative, plain | ぼくとつじゃない | (bokutotsujanai) |
| Negative, polite | ぼくとつじゃないです | (bokutotsujanaidesu) |
| Past negative, plain | ぼくとつじゃなかった | (bokutotsujanakatta) |
| Past negative, polite | ぼくとつじゃなかったです | (bokutotsujanakattadesu) |
| Te-form | ぼくとつで | (bokutotsude) |
| Conditional (―nara) | ぼくとつなら | (bokutotsunara) |