うっかり
when something is carried out inattentively, carelessly, without paying attention
クスクス
to giggle, laughing quietly
ふわふわ
something is drifting; airly, light, floaty OR something is extremely soft and fluffy
キラキラ
when something is brilliantly bright, glitters and shiny
ヒソヒソ
speaking in a quiet voice, no one can hear
ニコニコ・にっこり
has a smile on their face; happily, cheerfully
わんわん
someone cries loudly
さっぱり １
when something is clean and refreshing e.g. taste, bath
ビショビショ
when something is soaking wet
ヒラヒラ
the state of a thin and light object fluttering
くたくた
very tired, weak because of fatigue
そよそよ
a soft wind blowing, and the sound of leaves blowing in a soft breeze
モクモク
when something such as smoke or a cloud keep growing in volume
ぼんやり・ボー
a distracted state of mind, numbness
のんびり
completely relaxed, calm, takes things easy
ざあざあ
when rain is pouring hard, or its sound
ワクワク
to be excited out of joy
ビクビク
to be afraid and tremble, out of fear and anxiety
イライラ
feel overwrought, pressed, irritated
びゅうびゅう
a heavy wind blowing
ドキドキ
the pounding of the heart
ハラハラ
to worry and be anxious, be thrilled