dis ‧ or ‧ i ‧ en ‧ ting /dɪsˈɔːrientɪŋ/ BrE AmE ( also dis‧or‧i‧en‧tat‧ing /dɪsˈɔːriənteɪtɪŋ/ British English ) adjective
1 . making someone not know where they are or which direction they should go:
a disorientating maze of corridors
2 . confusing you and making you not certain about what is happening around you:
Lack of sleep can be disorienting.
—disorient ( also disorientate British English ) verb [transitive]
—disorientation /dɪsˌɔːriənˈteɪʃ ə n/ noun [uncountable]