Je suis désorienté = 1. I am disconcerted. 2. I am out of my element; I do not feel at home; I have lost my bearings.
Desserrer
Je n’ai pas desserré les dents = I never opened my lips.
Dessus
Par dessus le marché = Into the bargain; Over and above.
Il n’y a rien au dessus de cela = That beats everything.
Sens dessus dessous = All upside down; Topsy-turvy.
Ils ont eu le dessus = They got the best of it.
[Avoir le dessous = to get the worst of it.]
Prendre le dessus = To gain the upper hand.