Third person singular present tense: he/she/it confuses someone about their direction or location.
Standard conjugation of disorientate in the present tense, following the pattern of -ate verbs in English where the third person adds -s.
The fact that both 'disorients' and 'disorientates' exist shows English flexing between two regional forms—most languages have one verb form, but English speakers can't agree!
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