- 1. [adj-na] preventive
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) | よぼうてきな | (yoboutekina) |
| Non-past, plain | よぼうてきだ | (yoboutekida) |
| Non-past, polite | よぼうてきです | (yoboutekidesu) |
| Past, plain | よぼうてきだった | (yoboutekidatta) |
| Past, polite | よぼうてきでした | (yoboutekideshita) |
| Negative, plain | よぼうてきじゃない | (yoboutekijanai) |
| Negative, polite | よぼうてきじゃないです | (yoboutekijanaidesu) |
| Past negative, plain | よぼうてきじゃなかった | (yoboutekijanakatta) |
| Past negative, polite | よぼうてきじゃなかったです | (yoboutekijanakattadesu) |
| Te-form | よぼうてきで | (yoboutekide) |
| Conditional (―nara) | よぼうてきなら | (yoboutekinara) |