louse (lice pl ) n
(=body louse) pou m → Head scratching is the first sign of lice. → Many of the prisoners were covered with lice.
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louse up
vt sep
*
(=mess up) gâcher
→ It could louse up your divorce petition.
→ The war loused up his marriage and played havoc with his psyche.
→ It was adults who loused things up with their dithering and self-imposed rules.