gaku-gaku（ガクガク）
gaku-gaku describes a repeated, unsteady trembling or shaking motion, often caused by weakness, fear, cold, or exhaustion.
su（スッ）
1. Quick, smooth bodily movement
pata-pata（パタパタ）
pata-pata describes light, rapid, and repetitive sounds or movements.
ka（カッ）
ka describes a sudden, sharp widening of the eyes, used to mark an instantaneous shift in emotion or focus.
pera-pera（ペラペラ）
1. Speaking fluently or smoothly
muka-muka（ムカムカ）
muka-muka describes a feeling of disgust, irritation, or emotional nausea, often directed toward something unpleasant, offensive, or frustrating.
giri-giri（ギリギリ）
1. Barely managing to do something just in time or within limits
gaku（ガク）
gaku describes a sudden emotional or physical collapse caused by shock, disappointment, or discouragement.
bara-bara（バラバラ）
1. Scattered or separated into pieces
bari-bari（バリバリ）
bari-bari describes a hard, tearing or ripping sound, such as paper or material being forcefully torn.