1. Leave without a single word：没说一个字就离开了，不辞而别
Leaving without saying goodbye：不辞而别
She left without a single word, and we even don’t know when she is gone.
The man left home without a single word, with sadness and pains.
Farewell is hard, leaving without saying goodbye is better.
2. Take French leave：不辞而别，悄悄离去
If I take French leave someday, bury me in that spring time.
What I can do is taking a French leave before they wake up.
Taking French leave after budding is the spirit of plum blossom.
3. Absence without notice：不辞而别
His absence without notice makes her so sad.
You never knew how upset your parents were about your absence without notice.
4. Peel out：迅速离开，不辞而别
It is too late to say good bye. She has peeled out.
My little brother suddenly peeled out.
There must be something, or she wouldn’t peeled.
She was ghosting on her friend again.
He was at home just now, but the next moment he will disappear, in the manner of a ghost.