びくびくbikubiku
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- adverb (with と), suru verb, no-adjectivebeing afraid of; being fearful; being timid; being nervous彼はびくびくしている。↗He is afraid of his own shadow.
- adverb (with と), suru verb, no-adjectivetrembling; shivering
Conjugation
| Dictionary form | びくびくする |
|---|---|
| Polite (masu) | びくびくします |
| Negative (nai) | びくびくしない |
| polite (masen) | びくびくしません |
| classical zu / nu | びくびくせず・びくびくせぬ |
| Past (ta) | びくびくした |
| polite (mashita) | びくびくしました |
| Past negative (nakatta) | びくびくしなかった |
| polite (masen deshita) | びくびくしませんでした |
| Te form | びくびくして |
| Potential | びくびくできる |
| Passive | びくびくされる |
| Causative | びくびくさせる |
| Causative passive | びくびくさせられる |
| Conditional (ba) | びくびくすれば |
| tara | びくびくしたら |
| Volitional | びくびくしよう |
| polite (mashou) | びくびくしましょう |
| Imperative | びくびくしろ |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Antonym大胆だいたんNeutralBold and daring, acting without fear — the direct opposite of the timid, trembling 「ビクビク」.
- Antonym堂々どうどうNeutralDignified and unflinching, facing things openly and with confidence — the opposite of the fearful 「ビクビク」.
- Antonym落ち着くおちつくNeutralTo calm down and regain composure — the opposite of the anxious, on-edge 「ビクビク」.
Use 「ビクビク」 for being fearful and on edge, as in 「ビクビクする」. Its opposites are 「大胆」 (bold and daring), 「堂々」 (confident and unflinching) and 「落ち着く」 (calm and composed).
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


